Version 5.1.281.35 (cherry-pick)

src/objects.h

 // Copyright 2015 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.
 
 #ifndef V8_OBJECTS_H_
 #define V8_OBJECTS_H_
 
 #include <iosfwd>
 
 #include "src/assert-scope.h"
@@ skipping 10301 matching lines @@
       PropertyDescriptor* desc, ShouldThrow should_throw);
 
   static bool AnythingToArrayLength(Isolate* isolate,
                                     Handle<Object> length_object,
                                     uint32_t* output);
   MUST_USE_RESULT static Maybe<bool> ArraySetLength(Isolate* isolate,
                                                     Handle<JSArray> a,
                                                     PropertyDescriptor* desc,
                                                     ShouldThrow should_throw);
 
+  // Checks whether the Array has the current realm's Array.prototype as its
+  // prototype. This function is best-effort and only gives a conservative
+  // approximation, erring on the side of false, in particular with respect
+  // to Proxies and objects with a hidden prototype.
+  inline bool HasArrayPrototype(Isolate* isolate);
+
   DECLARE_CAST(JSArray)
 
   // Dispatched behavior.
   DECLARE_PRINTER(JSArray)
   DECLARE_VERIFIER(JSArray)
 
   // Number of element slots to pre-allocate for an empty array.
   static const int kPreallocatedArrayElements = 4;
 
   // Layout description.
@@ skipping 587 matching lines @@
     }
     return value;
   }
 };
 
 
 }  // NOLINT, false-positive due to second-order macros.
 }  // NOLINT, false-positive due to second-order macros.
 
 #endif  // V8_OBJECTS_H_