X64: Adds zone scope before creating codegenerator for testing.

src/x64/codegen-x64.cc

 // Copyright 2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 49 matching lines @@
 
 #define __ ACCESS_MASM(masm_)
 
 
 void CodeGenerator::DeclareGlobals(Handle<FixedArray> a) {
   UNIMPLEMENTED();
 }
 
 void CodeGenerator::TestCodeGenerator() {
   // Generate code.
+  ZoneScope zone_scope(DELETE_ON_EXIT);
   const int initial_buffer_size = 4 * KB;
   CodeGenerator cgen(initial_buffer_size, NULL, false);
   CodeGeneratorScope scope(&cgen);
   cgen.GenCode(NULL);
 
   CodeDesc desc;
   cgen.masm()->GetCode(&desc);
 }
 
 
@@ skipping 515 matching lines @@
 
   // Restore frame pointer and return.
   __ pop(rbp);
   __ ret(0);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal