[runtime] Allocate space for computed property names

src/parsing/parser-base.h

Index: src/parsing/parser-base.h
diff --git a/src/parsing/parser-base.h b/src/parsing/parser-base.h
index b17d664b3abe099d90f65d67a15f7c3e616bbc5a..78a2bc55c2ca18ecc32a96df8f9e47151d3165a5 100644
--- a/src/parsing/parser-base.h
+++ b/src/parsing/parser-base.h
@@ -2540,6 +2540,8 @@ typename ParserBase<Impl>::ExpressionT ParserBase<Impl>::ParseObjectLiteral(
   typename Types::ObjectPropertyList properties =
       impl()->NewObjectPropertyList(4);
   int number_of_boilerplate_properties = 0;
+  bool has_seen_proto = false;
+
   bool has_computed_names = false;
   bool has_rest_property = false;
   ObjectLiteralChecker checker(this);
@@ -2562,10 +2564,14 @@ typename ParserBase<Impl>::ExpressionT ParserBase<Impl>::ParseObjectLiteral(
       has_rest_property = true;
     }
 
-    // Count CONSTANT or COMPUTED properties to maintain the enumeration order.
-    if (!has_computed_names && impl()->IsBoilerplateProperty(property)) {
+    if (!impl()->IsBoilerplateProperty(property)) {
+      has_seen_proto = true;
+    } else if (!has_computed_names) {
+      // Count CONSTANT or COMPUTED properties to maintain the enumeration
+      // order.
       number_of_boilerplate_properties++;
     }
+
     properties->Add(property, zone());
 
     if (peek() != Token::RBRACE) {
@@ -2581,8 +2587,8 @@ typename ParserBase<Impl>::ExpressionT ParserBase<Impl>::ParseObjectLiteral(
   int literal_index = function_state_->NextMaterializedLiteralIndex();
 
   return factory()->NewObjectLiteral(properties, literal_index,
-                                     number_of_boilerplate_properties, pos,
-                                     has_rest_property);
+                                     number_of_boilerplate_properties,
+                                     has_seen_proto, pos, has_rest_property);
 }
 
 template <typename Impl>