Fix for temporaries in parameter initializers

src/ast/scopes.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/scopes.h"
 
 #include "src/accessors.h"
 #include "src/ast/scopeinfo.h"
 #include "src/bootstrapper.h"
 #include "src/messages.h"
@@ skipping 557 matching lines @@
 
 
 Variable* Scope::NewTemporary(const AstRawString* name) {
   DCHECK(!already_resolved());
   Scope* scope = this->ClosureScope();
   Variable* var = new(zone()) Variable(scope,
                                        name,
                                        TEMPORARY,
                                        Variable::NORMAL,
                                        kCreatedInitialized);
-  scope->temps_.Add(var, zone());
+  scope->AddTemporary(var);
   return var;
 }
 
 
+bool Scope::RemoveTemporary(Variable* var) {
+  // Most likely (always?) any temporary variable we want to remove
+  // was just added before, so we search backwards.
+  for (int i = temps_.length(); i-- > 0;) {
+    if (temps_[i] == var) {
+      temps_.Remove(i);
+      return true;
+    }
+  }
+  return false;
+}
+
+
 void Scope::AddDeclaration(Declaration* declaration) {
   decls_.Add(declaration, zone());
 }
 
 
 void Scope::SetIllegalRedeclaration(Expression* expression) {
   // Record only the first illegal redeclaration.
   if (!HasIllegalRedeclaration()) {
     illegal_redecl_ = expression;
   }
@@ skipping 1083 matching lines @@
       function_ != NULL && function_->proxy()->var()->IsContextSlot();
   return num_heap_slots() - Context::MIN_CONTEXT_SLOTS - num_global_slots() -
          (is_function_var_in_context ? 1 : 0);
 }
 
 
 int Scope::ContextGlobalCount() const { return num_global_slots(); }
 
 }  // namespace internal
 }  // namespace v8