Revision: 21275
Author:   [email protected]
Date:     Mon May 12 20:10:47 2014 UTC
Log: Revert "v8::TryCatch now works correctly with ASAN's UseAfterReturn mode enabled."

This reverts commit r21273.

[email protected]

Review URL: https://codereview.chromium.org/284493003
http://code.google.com/p/v8/source/detail?r=21275

Modified:
 /branches/bleeding_edge/include/v8.h
 /branches/bleeding_edge/src/api.cc
 /branches/bleeding_edge/src/base/macros.h
 /branches/bleeding_edge/src/isolate.cc
 /branches/bleeding_edge/src/zone.h

=======================================
--- /branches/bleeding_edge/include/v8.h        Mon May 12 19:32:12 2014 UTC
+++ /branches/bleeding_edge/include/v8.h        Mon May 12 20:10:47 2014 UTC
@@ -5076,8 +5076,6 @@
   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 @@
   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;
=======================================
--- /branches/bleeding_edge/src/api.cc  Mon May 12 19:32:12 2014 UTC
+++ /branches/bleeding_edge/src/api.cc  Mon May 12 20:10:47 2014 UTC
@@ -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"
@@ -1820,16 +1817,6 @@
     isolate_->UnregisterTryCatchHandler(this);
   }
 }
-
-
-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 {
@@ -1906,11 +1893,6 @@
   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
 }


=======================================
--- /branches/bleeding_edge/src/base/macros.h   Mon May 12 19:32:12 2014 UTC
+++ /branches/bleeding_edge/src/base/macros.h   Mon May 12 20:10:47 2014 UTC
@@ -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

=======================================
--- /branches/bleeding_edge/src/isolate.cc      Mon May 12 19:32:12 2014 UTC
+++ /branches/bleeding_edge/src/isolate.cc      Mon May 12 20:10:47 2014 UTC
@@ -272,14 +272,13 @@
   // 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;
=======================================
--- /branches/bleeding_edge/src/zone.h  Mon May 12 19:32:12 2014 UTC
+++ /branches/bleeding_edge/src/zone.h  Mon May 12 20:10:47 2014 UTC
@@ -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;

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