Classes: Fix issue with default constructor crash

src/parser.cc

Index: src/parser.cc
diff --git a/src/parser.cc b/src/parser.cc
index 7a88c5270da7ddc02f0564b2cfb91e1085cbe7fd..cdda832aedfe9983657a8647bb22204b9a551f9d 100644
--- a/src/parser.cc
+++ b/src/parser.cc
@@ -648,6 +648,45 @@ Expression* ParserTraits::ClassExpression(
                                   start_position, end_position);
 }
 
+
+Expression* ParserTraits::DefaultConstructor(
+    bool call_super, Scope* scope,
+    AstNodeFactory<AstConstructionVisitor>* factory) {
+  Scope* function_scope = NewScope(scope, FUNCTION_SCOPE);
+  // Set position and force eager compilation since lazy parsing tries to
+  // parse the content which does not exist.
+  function_scope->set_start_position(0);
+  function_scope->set_end_position(0);
+  // function_scope->SetScopeName(name);
+  function_scope->ForceEagerCompilation();
+
+  int pos = RelocInfo::kNoPosition;
+
+  Zone* zone = parser_->zone();
+  ZoneList<Statement*>* body = new (zone) ZoneList<Statement*>(1, zone);
+  if (call_super) {
+    Expression* prop = SuperReference(function_scope, factory, pos);
+    ZoneList<Expression*>* args = new (zone) ZoneList<Expression*>(0, zone);
+    Expression* call_expression = factory->NewCall(prop, args, pos);
+    body->Add(factory->NewExpressionStatement(call_expression, pos), zone);
+  }
+
+  int materialized_literal_count = 0;
+  int expected_property_count = 0;
+  int handler_count = 0;
+  int parameter_count = 0;
+
+  const AstRawString* name = ast_value_factory()->empty_string();
+
+  return factory->NewFunctionLiteral(
+      name, ast_value_factory(), function_scope, body,
+      materialized_literal_count, expected_property_count, handler_count,
+      parameter_count, FunctionLiteral::kNoDuplicateParameters,
+      FunctionLiteral::ANONYMOUS_EXPRESSION, FunctionLiteral::kIsFunction,
+      FunctionLiteral::kNotParenthesized, FunctionKind::kNormalFunction, pos);
+}
+
+
 Literal* ParserTraits::ExpressionFromLiteral(
     Token::Value token, int pos,
     Scanner* scanner,