Correct handling of exceptions occured during getting of exception stack trace.

src/api.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/api.h"
 
 #include <string.h>  // For memcpy, strlen.
 #ifdef V8_USE_ADDRESS_SANITIZER
 #include <sanitizer/asan_interface.h>
 #endif  // V8_USE_ADDRESS_SANITIZER
@@ skipping 1925 matching lines @@
 }
 
 
 v8::Local<Value> v8::TryCatch::StackTrace() const {
   if (HasCaught()) {
     i::Object* raw_obj = reinterpret_cast<i::Object*>(exception_);
     if (!raw_obj->IsJSObject()) return v8::Local<Value>();
     i::HandleScope scope(isolate_);
     i::Handle<i::JSObject> obj(i::JSObject::cast(raw_obj), isolate_);
     i::Handle<i::String> name = isolate_->factory()->stack_string();
+    {
+      EXCEPTION_PREAMBLE(isolate_);
+      Maybe<bool> maybe = i::JSReceiver::HasProperty(obj, name);
+      has_pending_exception = !maybe.has_value;
+      EXCEPTION_BAILOUT_CHECK(isolate_, v8::Local<Value>());
+      if (!maybe.value) return v8::Local<Value>();
+    }
+    i::Handle<i::Object> value;
     EXCEPTION_PREAMBLE(isolate_);
-    Maybe<bool> maybe = i::JSReceiver::HasProperty(obj, name);
-    has_pending_exception = !maybe.has_value;
+    has_pending_exception = !i::Object::GetProperty(obj, name).ToHandle(&value);
     EXCEPTION_BAILOUT_CHECK(isolate_, v8::Local<Value>());
-    if (!maybe.value) return v8::Local<Value>();
-    i::Handle<i::Object> value;
-    if (!i::Object::GetProperty(obj, name).ToHandle(&value)) {
-      return v8::Local<Value>();
-    }
     return v8::Utils::ToLocal(scope.CloseAndEscape(value));
   } else {
     return v8::Local<Value>();
   }
 }
 
 
 v8::Local<v8::Message> v8::TryCatch::Message() const {
   i::Object* message = reinterpret_cast<i::Object*>(message_obj_);
   DCHECK(message->IsJSMessageObject() || message->IsTheHole());
@@ skipping 5795 matching lines @@
   Isolate* isolate = reinterpret_cast<Isolate*>(info.GetIsolate());
   Address callback_address =
       reinterpret_cast<Address>(reinterpret_cast<intptr_t>(callback));
   VMState<EXTERNAL> state(isolate);
   ExternalCallbackScope call_scope(isolate, callback_address);
   callback(info);
 }
 
 
 } }  // namespace v8::internal