Revert "[ASan] Do not misrepresent high value address dereferences as null dereferences"

As it was breaking bots running sanitizer lint check

This reverts r374265 (git b577efe4567f1f6a711ad36e1d17280dd1c4f009)

llvm-svn: 374308

1 files changed, 1 insertions, 8 deletions

diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_common.h b/compiler-rt/lib/sanitizer_common/sanitizer_common.h
index 87b8f02b5b7..ad056df387d 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_common.h
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_common.h
@@ -881,11 +881,6 @@ struct SignalContext {
   bool is_memory_access;
   enum WriteFlag { UNKNOWN, READ, WRITE } write_flag;
 
-  // In some cases the kernel cannot provide the true faulting address; `addr`
-  // will be zero then.  This field allows to distinguish between these cases
-  // and dereferences of null.
-  bool is_true_faulting_addr;
-
   // VS2013 doesn't implement unrestricted unions, so we need a trivial default
   // constructor
   SignalContext() = default;
@@ -898,8 +893,7 @@ struct SignalContext {
         context(context),
         addr(GetAddress()),
         is_memory_access(IsMemoryAccess()),
-        write_flag(GetWriteFlag()),
-        is_true_faulting_addr(IsTrueFaultingAddress()) {
+        write_flag(GetWriteFlag()) {
     InitPcSpBp();
   }
 
@@ -920,7 +914,6 @@ struct SignalContext {
   uptr GetAddress() const;
   WriteFlag GetWriteFlag() const;
   bool IsMemoryAccess() const;
-  bool IsTrueFaultingAddress() const;
 };
 
 void InitializePlatformEarly();