Split Mprotect into MmapNoAccess and MprotectNoAccess to be more portable

On Windows, we have to know if a memory to be protected is mapped or not.
On POSIX, Mprotect was semantically different from mprotect most people know.



git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@234602 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc b/lib/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc
index 64e1c7974..47b27e7e5 100644
--- a/lib/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc
+++ b/lib/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc
@@ -310,7 +310,7 @@ class ScopedStackSpaceWithGuard {
     // in the future.
     guard_start_ = (uptr)MmapOrDie(stack_size_ + guard_size_,
                                    "ScopedStackWithGuard");
-    CHECK_EQ(guard_start_, (uptr)Mprotect((uptr)guard_start_, guard_size_));
+    CHECK(MprotectNoAccess((uptr)guard_start_, guard_size_));
   }
   ~ScopedStackSpaceWithGuard() {
     UnmapOrDie((void *)guard_start_, stack_size_ + guard_size_);