[runtime] Sanitize %NewClosure runtime entries.

src/compiler/ast-graph-builder.cc

 // Copyright 2014 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/compiler/ast-graph-builder.h"
 
 #include "src/compiler.h"
 #include "src/compiler/ast-loop-assignment-analyzer.h"
 #include "src/compiler/control-builders.h"
 #include "src/compiler/js-type-feedback.h"
@@ skipping 1492 matching lines @@
 
 void AstGraphBuilder::VisitDebuggerStatement(DebuggerStatement* stmt) {
   Node* node =
       NewNode(javascript()->CallRuntime(Runtime::kHandleDebuggerStatement, 0));
   PrepareFrameState(node, stmt->DebugBreakId());
   environment()->MarkAllLocalsLive();
 }
 
 
 void AstGraphBuilder::VisitFunctionLiteral(FunctionLiteral* expr) {
-  Node* context = current_context();
-
   // Find or build a shared function info.
   Handle<SharedFunctionInfo> shared_info =
       Compiler::GetSharedFunctionInfo(expr, info()->script(), info());
   CHECK(!shared_info.is_null());  // TODO(mstarzinger): Set stack overflow?
 
   // Create node to instantiate a new closure.
   PretenureFlag pretenure = expr->pretenure() ? TENURED : NOT_TENURED;
   const Operator* op = javascript()->CreateClosure(shared_info, pretenure);
-  Node* value = NewNode(op, context);
+  Node* value = NewNode(op);
   ast_context()->ProduceValue(value);
 }
 
 
 void AstGraphBuilder::VisitClassLiteral(ClassLiteral* expr) {
   if (expr->scope() == NULL) {
     // Visit class literal in the same scope, no declarations.
     VisitClassLiteralContents(expr);
   } else {
     // Visit declarations and class literal in a block scope.
@@ skipping 2732 matching lines @@
     // Phi does not exist yet, introduce one.
     value = NewPhi(inputs, value, control);
     value->ReplaceInput(inputs - 1, other);
   }
   return value;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8