Fix for temporaries in parameter initializers

src/ast/scopes.h

 // 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.
 
 #ifndef V8_AST_SCOPES_H_
 #define V8_AST_SCOPES_H_
 
 #include "src/ast/ast.h"
 #include "src/hashmap.h"
 #include "src/pending-compilation-error-handler.h"
@@ skipping 191 matching lines @@
   // such a variable again if it was added; otherwise this is a no-op.
   bool RemoveUnresolved(VariableProxy* var);
 
   // Creates a new temporary variable in this scope's TemporaryScope.  The
   // name is only used for printing and cannot be used to find the variable.
   // In particular, the only way to get hold of the temporary is by keeping the
   // Variable* around.  The name should not clash with a legitimate variable
   // names.
   Variable* NewTemporary(const AstRawString* name);
 
+  // Remove a temporary variable. This is for adjusting the scope of
+  // temporaries used when desugaring parameter initializers.
+  bool RemoveTemporary(Variable* var);
+
+  // Adds a temporary variable in this scope's TemporaryScope. This is for
+  // adjusting the scope of temporaries used when desugaring parameter
+  // initializers.
+  void AddTemporary(Variable* var) { temps_.Add(var, zone()); }
+
   // Adds the specific declaration node to the list of declarations in
   // this scope. The declarations are processed as part of entering
   // the scope; see codegen.cc:ProcessDeclarations.
   void AddDeclaration(Declaration* declaration);
 
   // ---------------------------------------------------------------------------
   // Illegal redeclaration support.
 
   // Set an expression node that will be executed when the scope is
   // entered. We only keep track of one illegal redeclaration node per
@@ skipping 609 matching lines @@
 
   // For tracking which classes are declared consecutively. Needed for strong
   // mode.
   int class_declaration_group_start_;
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_AST_SCOPES_H_