| Index: src/x64/codegen-x64.cc | 
| diff --git a/src/x64/codegen-x64.cc b/src/x64/codegen-x64.cc | 
| index 3c054cd49a0d11aec75c2a49e545cad922ceb7ea..8074b4a38a3d7fc21b17430a6bab333e67798cdd 100644 | 
| --- a/src/x64/codegen-x64.cc | 
| +++ b/src/x64/codegen-x64.cc | 
| @@ -4261,9 +4261,10 @@ void CodeGenerator::InstantiateFunction( | 
|  | 
| // Use the fast case closure allocation code that allocates in new | 
| // space for nested functions that don't need literals cloning. | 
| -  if (scope()->is_function_scope() && | 
| +  if (!pretenure && | 
| +      scope()->is_function_scope() && | 
| function_info->num_literals() == 0 && | 
| -      !pretenure) { | 
| +      !function_info->strict_mode()) {  // Strict mode functions use slow path. | 
| FastNewClosureStub stub; | 
| frame_->Push(function_info); | 
| Result answer = frame_->CallStub(&stub, 1); | 
|  |