Fix new call level

When the current level is 1024, next CALL/CREATE
will do simple return with zero value pushed to the
 stack

ethereumj-core/src/main/java/org/ethereum/vm/Program.java

@@ -44,6 +44,14 @@ public class Program {
     private static final Logger logger = LoggerFactory.getLogger("VM");
     private static final Logger gasLogger = LoggerFactory.getLogger("gas");
 
+    /**
+     * This attribute defines the number of recursive calls allowed in the EVM
+     * Note: For the JVM to reach this level without a StackOverflow exception,
+     * ethereumj may need to be started with a JVM argument to increase
+     * the stack size. For example: -Xss10m
+     */
+    private static final int MAX_DEPTH = 1024;
+
     ProgramInvokeFactory programInvokeFactory = new ProgramInvokeFactoryImpl();
 
     private int invokeHash;
@@ -295,6 +303,11 @@ public class Program {
 
     public void createContract(DataWord value, DataWord memStart, DataWord memSize) {
 
+        if (invokeData.getCallDeep() == MAX_DEPTH){
+            stackPushZero();
+            return;
+        }
+
         // [1] FETCH THE CODE FROM THE MEMORY
         byte[] programCode = memoryChunk(memStart, memSize).array();
 
@@ -403,6 +416,11 @@ public class Program {
      */
     public void callToAddress(MessageCall msg) {
 
+        if (invokeData.getCallDeep() == MAX_DEPTH){
+            stackPushZero();
+            return;
+        }
+        
         byte[] data = memoryChunk(msg.getInDataOffs(), msg.getInDataSize()).array();
 
         // FETCH THE SAVED STORAGE

ethereumj-core/src/main/java/org/ethereum/vm/ProgramInvokeFactoryImpl.java

@@ -28,13 +28,6 @@ public class ProgramInvokeFactoryImpl implements ProgramInvokeFactory {
     @Autowired
     private Blockchain blockchain;
 
-    /**
-     * This attribute defines the number of recursive calls allowed in the EVM
-     * Note: For the JVM to reach this level without a StackOverflow exception,
-     * ethereumj may need to be started with a JVM argument to increase
-     * the stack size. For example: -Xss10m
-     */
-    private static final int MAX_DEPTH = 1024;
 
     // Invocation by the wire tx
     @Override
@@ -189,9 +182,6 @@ public class ProgramInvokeFactoryImpl implements ProgramInvokeFactory {
                     gasLimit.longValue());
         }
 
-        if (program.invokeData.getCallDeep() >= MAX_DEPTH)
-            throw program.new OutOfGasException();
-
         return new ProgramInvokeImpl(address, origin, caller, balance, gasPrice, gas, callValue,
                 data, lastHash, coinbase, timestamp, number, difficulty, gasLimit,
                 repository, program.invokeData.getCallDeep() + 1);

ethereumj-core/src/main/java/org/ethereum/vm/VM.java

@@ -68,6 +68,7 @@ public class VM {
 
     private static BigInteger MAX_GAS = BigInteger.valueOf(Long.MAX_VALUE);
 
+
     /* Keeps track of the number of steps performed in this VM */
     private int vmCounter = 0;