Fix receiver in Runtime::GetFrameDetails

src/runtime/runtime-debug.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/runtime/runtime-utils.h"
 
 #include "src/arguments.h"
 #include "src/compiler.h"
 #include "src/debug/debug-coverage.h"
 #include "src/debug/debug-evaluate.h"
@@ skipping 714 matching lines @@
 
   // Add locals name and value from the temporary copy from the function frame.
   for (const auto& local : locals) details->set(details_index++, *local);
 
   // Add the value being returned.
   if (at_return) {
     details->set(details_index++, *return_value);
   }
 
   // Add the receiver (same as in function frame).
-  Handle<Object> receiver(it.frame()->receiver(), isolate);
+  Handle<Object> receiver = frame_inspector.summary().receiver();
   DCHECK(function->shared()->IsUserJavaScript());
-  DCHECK_IMPLIES(is_sloppy(shared->language_mode()), receiver->IsJSReceiver());
+  // Optimized frames only restore the receiver as best-effort (see
+  // OptimizedFrame::Summarize).
+  DCHECK_IMPLIES(!is_optimized && is_sloppy(shared->language_mode()),
+                 receiver->IsJSReceiver());
   details->set(kFrameDetailsReceiverIndex, *receiver);
 
   DCHECK_EQ(details_size, details_index);
   return *isolate->factory()->NewJSArrayWithElements(details);
 }
 
 
 RUNTIME_FUNCTION(Runtime_GetScopeCount) {
   HandleScope scope(isolate);
   DCHECK_EQ(2, args.length());
@@ skipping 1224 matching lines @@
   if (enable) {
     Coverage::EnablePrecise(isolate);
   } else {
     Coverage::DisablePrecise(isolate);
   }
   return isolate->heap()->undefined_value();
 }
 
 }  // namespace internal
 }  // namespace v8