Turn the unresolved-references list into a linked list using the VariableProxies themselves

src/ast/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/ast.h"
 
 #include <cmath>  // For isfinite.
 
 #include "src/ast/prettyprinter.h"
 #include "src/ast/scopes.h"
@@ skipping 160 matching lines @@
   }
 }
 
 VariableProxy::VariableProxy(Zone* zone, Variable* var, int start_position,
                              int end_position)
     : Expression(zone, start_position, kVariableProxy),
       bit_field_(IsThisField::encode(var->is_this()) |
                  IsAssignedField::encode(false) |
                  IsResolvedField::encode(false)),
       end_position_(end_position),
-      raw_name_(var->raw_name()) {
+      raw_name_(var->raw_name()),
+      next_unresolved_(nullptr) {
   BindTo(var);
 }
 
 VariableProxy::VariableProxy(Zone* zone, const AstRawString* name,
                              Variable::Kind variable_kind, int start_position,
                              int end_position)
     : Expression(zone, start_position, kVariableProxy),
       bit_field_(IsThisField::encode(variable_kind == Variable::THIS) |
                  IsAssignedField::encode(false) |
                  IsResolvedField::encode(false)),
       end_position_(end_position),
-      raw_name_(name) {}
+      raw_name_(name),
+      next_unresolved_(nullptr) {}
 
 void VariableProxy::BindTo(Variable* var) {
   DCHECK((is_this() && var->is_this()) || raw_name() == var->raw_name());
   set_var(var);
   set_is_resolved();
   var->set_is_used();
 }
 
 
 void VariableProxy::AssignFeedbackVectorSlots(Isolate* isolate,
@@ skipping 1030 matching lines @@
 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 internal
 }  // namespace v8