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

src/execution.cc

 // Copyright 2014 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/execution.h"
 
 #include "src/bootstrapper.h"
 #include "src/codegen.h"
 #include "src/deoptimizer.h"
 #include "src/isolate-inl.h"
@@ skipping 521 matching lines @@
   RETURN_NATIVE_CALL(to_int32, { obj });
 }
 
 
 MaybeHandle<Object> Execution::NewDate(Isolate* isolate, double time) {
   Handle<Object> time_obj = isolate->factory()->NewNumber(time);
   RETURN_NATIVE_CALL(create_date, { time_obj });
 }
 
 
+MaybeHandle<Object> Execution::PromiseHasRejectHandler(Isolate* isolate,
+                                                       Handle<Object> promise) {
+  return Call(isolate, isolate->promise_has_reject_handler(), promise, 0, NULL);
+}
+
+
 #undef RETURN_NATIVE_CALL
 
 
 MaybeHandle<JSRegExp> Execution::NewJSRegExp(Handle<String> pattern,
                                              Handle<String> flags) {
   Isolate* isolate = pattern->GetIsolate();
   Handle<JSFunction> function = Handle<JSFunction>(
       isolate->native_context()->regexp_function());
   Handle<Object> re_obj;
   ASSIGN_RETURN_ON_EXCEPTION(
@@ skipping 148 matching lines @@
   }
 
   isolate_->counters()->stack_interrupts()->Increment();
   isolate_->counters()->runtime_profiler_ticks()->Increment();
   isolate_->runtime_profiler()->OptimizeNow();
 
   return isolate_->heap()->undefined_value();
 }
 
 } }  // namespace v8::internal