Ensure object literal element boilerplates aren't modified.

src/ast.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/ast.h"
 
 #include <cmath>  // For isfinite.
 #include "src/builtins.h"
 #include "src/code-stubs.h"
 #include "src/contexts.h"
@@ skipping 350 matching lines @@
     }
 
     // Add name, value pair to the fixed array.
     constant_properties->set(position++, *key);
     constant_properties->set(position++, *value);
   }
 
   constant_properties_ = constant_properties;
   fast_elements_ =
       (max_element_index <= 32) || ((2 * elements) >= max_element_index);
+  has_elements_ = elements > 0;
   set_is_simple(is_simple);
   set_depth(depth_acc);
 }
 
 
 void ArrayLiteral::BuildConstantElements(Isolate* isolate) {
   if (!constant_elements_.is_null()) return;
 
   // Allocate a fixed array to hold all the object literals.
   Handle<JSArray> array =
@@ skipping 621 matching lines @@
 // static
 bool Literal::Match(void* literal1, void* literal2) {
   const AstValue* x = static_cast<Literal*>(literal1)->raw_value();
   const AstValue* y = static_cast<Literal*>(literal2)->raw_value();
   return (x->IsString() && y->IsString() && *x->AsString() == *y->AsString()) ||
          (x->IsNumber() && y->IsNumber() && x->AsNumber() == y->AsNumber());
 }
 
 
 } }  // namespace v8::internal