Report promise reject with no handler (behind a flag).

include/v8.h

 // 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.
 
 /** \mainpage V8 API Reference Guide
  *
  * V8 is Google's open source JavaScript engine.
  *
  * This set of documents provides reference material generated from the
  * V8 header file, include/v8.h.
@@ skipping 67 matching lines @@
 class Integer;
 class Isolate;
 class Name;
 class Number;
 class NumberObject;
 class Object;
 class ObjectOperationDescriptor;
 class ObjectTemplate;
 class Platform;
 class Primitive;
+class Promise;
 class RawOperationDescriptor;
 class Script;
 class Signature;
 class StackFrame;
 class StackTrace;
 class String;
 class StringObject;
 class Symbol;
 class SymbolObject;
 class Private;
@@ skipping 1131 matching lines @@
 
 /**
  * An error message.
  */
 class V8_EXPORT Message {
  public:
   Local<String> Get() const;
   Local<String> GetSourceLine() const;
 
   /**
+   * Returns the promise attached to this message.  If this message has not
+   * been triggered by a promise rejection, the empty handle is returned.
+   */
+  Handle<Promise> GetPromise() const;
+
+  /**
    * Returns the origin for the script from where the function causing the
    * error originates.
    */
   ScriptOrigin GetScriptOrigin() const;
 
   /**
    * Returns the resource name for the script from where the function causing
    * the error originates.
    */
   Handle<Value> GetScriptResourceName() const;
@@ skipping 1561 matching lines @@
 
   /**
    * Register a resolution/rejection handler with a promise.
    * The handler is given the respective resolution/rejection value as
    * an argument. If the promise is already resolved/rejected, the handler is
    * invoked at the end of turn.
    */
   Local<Promise> Chain(Handle<Function> handler);
   Local<Promise> Catch(Handle<Function> handler);
   Local<Promise> Then(Handle<Function> handler);
+  bool HasRejectHandler();
 
   V8_INLINE static Promise* Cast(Value* obj);
 
  private:
   Promise();
   static void CheckCast(Value* obj);
 };
 
 
 #ifndef V8_ARRAY_BUFFER_INTERNAL_FIELD_COUNT
@@ skipping 2983 matching lines @@
       4 * kApiPointerSize;
   static const int kAmountOfExternalAllocatedMemoryAtLastGlobalGCOffset =
       kAmountOfExternalAllocatedMemoryOffset + kApiInt64Size;
   static const int kIsolateRootsOffset =
       kAmountOfExternalAllocatedMemoryAtLastGlobalGCOffset + kApiInt64Size +
       kApiPointerSize;
   static const int kUndefinedValueRootIndex = 5;
   static const int kNullValueRootIndex = 7;
   static const int kTrueValueRootIndex = 8;
   static const int kFalseValueRootIndex = 9;
-  static const int kEmptyStringRootIndex = 164;
+  static const int kEmptyStringRootIndex = 165;
 
   // The external allocation limit should be below 256 MB on all architectures
   // to avoid that resource-constrained embedders run low on memory.
   static const int kExternalAllocationLimit = 192 * 1024 * 1024;
 
   static const int kNodeClassIdOffset = 1 * kApiPointerSize;
   static const int kNodeFlagsOffset = 1 * kApiPointerSize + 3;
   static const int kNodeStateMask = 0xf;
   static const int kNodeStateIsWeakValue = 2;
   static const int kNodeStateIsPendingValue = 3;
@@ skipping 1115 matching lines @@
  */
 
 
 }  // namespace v8
 
 
 #undef TYPE_CHECK
 
 
 #endif  // V8_H_