Revert "v8::TryCatch now works correctly with ASAN's UseAfterReturn mode enabled."

This reverts commit r21273.

TBR=danno@chromium.org

Review URL: https://codereview.chromium.org/284493003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21275 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

include/v8.h

@@ -5076,8 +5076,6 @@ class V8_EXPORT TryCatch {
   void SetCaptureMessage(bool value);
 
  private:
-  TryCatch* DesanitizedThis();
-
   // Make it hard to create heap-allocated TryCatch blocks.
   TryCatch(const TryCatch&);
   void operator=(const TryCatch&);
@@ -5089,7 +5087,6 @@ class V8_EXPORT TryCatch {
   void* exception_;
   void* message_obj_;
   void* message_script_;
-  void* asan_fake_stack_handle_;
   int message_start_pos_;
   int message_end_pos_;
   bool is_verbose_ : 1;

src/api.cc

@@ -6,9 +6,6 @@
 
 #include <string.h>  // For memcpy, strlen.
 #include <cmath>  // For isnan.
-#ifdef V8_USE_ADDRESS_SANITIZER
-#include <sanitizer/asan_interface.h>
-#endif  // V8_USE_ADDRESS_SANITIZER
 #include "../include/v8-debug.h"
 #include "../include/v8-profiler.h"
 #include "../include/v8-testing.h"
@@ -1822,16 +1819,6 @@ v8::TryCatch::~TryCatch() {
 }
 
 
-v8::TryCatch* v8::TryCatch::DesanitizedThis() {
-#ifdef V8_USE_ADDRESS_SANITIZER
-  return TRY_CATCH_FROM_ADDRESS(
-      __asan_addr_is_in_fake_stack(asan_fake_stack_handle_, this, NULL, NULL));
-#else
-  return this;
-#endif
-}
-
-
 bool v8::TryCatch::HasCaught() const {
   return !reinterpret_cast<i::Object*>(exception_)->IsTheHole();
 }
@@ -1906,11 +1893,6 @@ void v8::TryCatch::Reset() {
   message_script_ = the_hole;
   message_start_pos_ = 0;
   message_end_pos_ = 0;
-#ifdef V8_USE_ADDRESS_SANITIZER
-  asan_fake_stack_handle_ = __asan_get_current_fake_stack();
-#else
-  asan_fake_stack_handle_ = NULL;
-#endif
 }
 
 

src/base/macros.h

@@ -54,17 +54,15 @@
 #define MUST_USE_RESULT V8_WARN_UNUSED_RESULT
 
 
-// Define V8_USE_ADDRESS_SANITIZER macros.
+// Define DISABLE_ASAN macros.
 #if defined(__has_feature)
 #if __has_feature(address_sanitizer)
-#define V8_USE_ADDRESS_SANITIZER 1
+#define DISABLE_ASAN __attribute__((no_sanitize_address))
 #endif
 #endif
 
-// Define DISABLE_ASAN macros.
-#ifdef V8_USE_ADDRESS_SANITIZER
-#define DISABLE_ASAN __attribute__((no_sanitize_address))
-#else
+
+#ifndef DISABLE_ASAN
 #define DISABLE_ASAN
 #endif
 

src/isolate.cc

@@ -272,14 +272,13 @@ void Isolate::RegisterTryCatchHandler(v8::TryCatch* that) {
   // JS stack.  When running without the simulator, the address
   // returned will be the address of the C++ try catch handler itself.
   Address address = reinterpret_cast<Address>(
-      SimulatorStack::RegisterCTryCatch(reinterpret_cast<uintptr_t>(
-          that->DesanitizedThis())));
+      SimulatorStack::RegisterCTryCatch(reinterpret_cast<uintptr_t>(that)));
   thread_local_top()->set_try_catch_handler_address(address);
 }
 
 
 void Isolate::UnregisterTryCatchHandler(v8::TryCatch* that) {
-  ASSERT(thread_local_top()->TryCatchHandler() == that->DesanitizedThis());
+  ASSERT(thread_local_top()->TryCatchHandler() == that);
   thread_local_top()->set_try_catch_handler_address(
       reinterpret_cast<Address>(that->next_));
   thread_local_top()->catcher_ = NULL;

src/zone.h

@@ -15,6 +15,11 @@
 namespace v8 {
 namespace internal {
 
+#if defined(__has_feature)
+  #if __has_feature(address_sanitizer)
+    #define V8_USE_ADDRESS_SANITIZER
+  #endif
+#endif
 
 class Segment;
 class Isolate;