Fix random test generator

test/createRandomTest.cpp

@@ -1,18 +1,18 @@
 /*
-    This file is part of cpp-ethereum.
+	This file is part of cpp-ethereum.
 
-    cpp-ethereum is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
+	cpp-ethereum is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
 
-    cpp-ethereum is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
+	cpp-ethereum is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
 
-    You should have received a copy of the GNU General Public License
-    along with cpp-ethereum.  If not, see <http://www.gnu.org/licenses/>.
+	You should have received a copy of the GNU General Public License
+	along with cpp-ethereum.  If not, see <http://www.gnu.org/licenses/>.
 */
 /** @file createRandomTest.cpp
  * @author Christoph Jentzsch <jentzsch.simulationsoftware@gmail.com>
@@ -31,6 +31,7 @@
 #include <json_spirit/json_spirit_writer_template.h>
 #include <libdevcore/CommonIO.h>
 #include <libdevcore/CommonData.h>
+#include <libethereum/VMFactory.h>
 #include <libevmcore/Instruction.h>
 #include <libevm/VM.h>
 #include "vm.h"
@@ -128,6 +129,9 @@ void doMyTests(json_spirit::mValue& v)
 		assert(o.count("pre") > 0);
 		assert(o.count("exec") > 0);
 
+
+		auto vmObj = eth::VMFactory::create(eth::VMFactory::Interpreter);
+		auto& vm = *vmObj;
 		dev::test::FakeExtVM fev;
 		fev.importEnv(o["env"].get_obj());
 		fev.importState(o["pre"].get_obj());
@@ -141,9 +145,8 @@ void doMyTests(json_spirit::mValue& v)
 			fev.code = fev.thisTxCode;
 		}
 
+		vm.reset(fev.gas);
 		bytes output;
-		eth::VM vm(fev.gas);
-
 		u256 gas;
 		bool vmExceptionOccured = false;
 		try