Remove API check for interceptors to notify us of modifying the receiver

src/objects.cc

 // 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.
 
 #include "src/objects.h"
 
 #include <cmath>
 #include <iomanip>
 #include <memory>
 #include <sstream>
@@ skipping 4905 matching lines @@
         // Check whether it makes sense to reuse the lookup iterator. Here it
         // might still call into setters up the prototype chain.
         return JSObject::SetPropertyWithFailedAccessCheck(it, value,
                                                           should_throw);
 
       case LookupIterator::JSPROXY:
         return JSProxy::SetProperty(it->GetHolder<JSProxy>(), it->GetName(),
                                     value, it->GetReceiver(), language_mode);
 
       case LookupIterator::INTERCEPTOR: {
-        Handle<Map> store_target_map;
-        if (it->GetReceiver()->IsJSObject()) {
-          store_target_map = handle(it->GetStoreTarget()->map(), it->isolate());
-        }
         if (it->HolderIsReceiverOrHiddenPrototype()) {
           Maybe<bool> result =
               JSObject::SetPropertyWithInterceptor(it, should_throw, value);
           if (result.IsNothing() || result.FromJust()) return result;
-          // Interceptor modified the store target but failed to set the
-          // property.
-          Utils::ApiCheck(store_target_map.is_null() ||
-                              *store_target_map == it->GetStoreTarget()->map(),
-                          it->IsElement() ? "v8::IndexedPropertySetterCallback"
-                                          : "v8::NamedPropertySetterCallback",
-                          "Interceptor silently changed store target.");
         } else {
           Maybe<PropertyAttributes> maybe_attributes =
               JSObject::GetPropertyAttributesWithInterceptor(it);
           if (!maybe_attributes.IsJust()) return Nothing<bool>();
           if ((maybe_attributes.FromJust() & READ_ONLY) != 0) {
             return WriteToReadOnlyProperty(it, value, should_throw);
           }
-          // Interceptor modified the store target but failed to set the
-          // property.
-          Utils::ApiCheck(store_target_map.is_null() ||
-                              *store_target_map == it->GetStoreTarget()->map(),
-                          it->IsElement() ? "v8::IndexedPropertySetterCallback"
-                                          : "v8::NamedPropertySetterCallback",
-                          "Interceptor silently changed store target.");
           if (maybe_attributes.FromJust() == ABSENT) break;
           *found = false;
           return Nothing<bool>();
         }
         break;
       }
 
       case LookupIterator::ACCESSOR: {
         if (it->IsReadOnly()) {
           return WriteToReadOnlyProperty(it, value, should_throw);
@@ skipping 1869 matching lines @@
     if (!it.HasAccess()) {
       isolate->ReportFailedAccessCheck(it.GetHolder<JSObject>());
       RETURN_VALUE_IF_SCHEDULED_EXCEPTION(isolate, Nothing<bool>());
       return Just(true);
     }
     it.Next();
   }
 
   // Handle interceptor
   if (it.state() == LookupIterator::INTERCEPTOR) {
-    Handle<Map> store_target_map;
-    if (it.GetReceiver()->IsJSObject()) {
-      store_target_map = handle(it.GetStoreTarget()->map(), it.isolate());
-    }
     if (it.HolderIsReceiverOrHiddenPrototype()) {
       Maybe<bool> result = DefinePropertyWithInterceptorInternal(
           &it, it.GetInterceptor(), should_throw, *desc);
       if (result.IsNothing() || result.FromJust()) {
         return result;
       }
-      // Interceptor modified the store target but failed to set the
-      // property.
-      if (!store_target_map.is_null() &&
-          *store_target_map != it.GetStoreTarget()->map()) {
-        it.isolate()->PushStackTraceAndDie(
-            0xabababaa, v8::ToCData<void*>(it.GetInterceptor()->definer()),
-            nullptr, 0xabababab);
-      }
-      Utils::ApiCheck(store_target_map.is_null() ||
-                          *store_target_map == it.GetStoreTarget()->map(),
-                      it.IsElement() ? "v8::IndexedPropertyDefinerCallback"
-                                     : "v8::NamedPropertyDefinerCallback",
-                      "Interceptor silently changed store target.");
     }
   }
 
   return OrdinaryDefineOwnProperty(&it, desc, should_throw);
 }
 
 
 // ES6 9.1.6.1
 // static
 Maybe<bool> JSReceiver::OrdinaryDefineOwnProperty(LookupIterator* it,
@@ skipping 13614 matching lines @@
       // depend on this.
       return DICTIONARY_ELEMENTS;
     }
     DCHECK_LE(kind, LAST_ELEMENTS_KIND);
     return kind;
   }
 }
 
 }  // namespace internal
 }  // namespace v8