[compiler-rt] r307408 - Fix-up for r307307: vm_info.max_address is the first non-addressable pointer, so we need to subtract one.

[Kuba Mracek via llvm-commits]

Author: kuba.brecka
Date: Fri Jul  7 08:32:44 2017
New Revision: 307408

URL: http://llvm.org/viewvc/llvm-project?rev=307408&view=rev
Log:
Fix-up for r307307: vm_info.max_address is the first non-addressable pointer, so we need to subtract one.


Modified:
    compiler-rt/trunk/lib/sanitizer_common/sanitizer_mac.cc

Modified: compiler-rt/trunk/lib/sanitizer_common/sanitizer_mac.cc
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/sanitizer_common/sanitizer_mac.cc?rev=307408&r1=307407&r2=307408&view=diff
==============================================================================
--- compiler-rt/trunk/lib/sanitizer_common/sanitizer_mac.cc (original)
+++ compiler-rt/trunk/lib/sanitizer_common/sanitizer_mac.cc Fri Jul  7 08:32:44 2017
@@ -815,7 +815,7 @@ uptr GetTaskInfoMaxAddress() {
   mach_msg_type_number_t count = sizeof(vm_info) / sizeof(int);
   int err = task_info(mach_task_self(), TASK_VM_INFO, (int *)&vm_info, &count);
   if (err == 0) {
-    return vm_info.max_address;
+    return vm_info.max_address - 1;
   } else {
     // xnu cannot provide vm address limit
     return 0x200000000 - 1;