Fixed reverting error

ethchain/state.go

@@ -157,9 +157,11 @@ func (self *State) Copy() *State {
 }
 
 func (self *State) Set(state *State) {
-	//s.trie = snapshot.trie
-	//s.stateObjects = snapshot.stateObjects
-	self = state
+	if state == nil {
+		panic("Tried setting 'state' to nil through 'Set'")
+	}
+
+	*self = *state
 }
 
 func (s *State) Put(key, object []byte) {

ethchain/state_object.go

@@ -191,13 +191,12 @@ func (self *StateObject) Copy() *StateObject {
 	}
 	stateObject.script = ethutil.CopyBytes(self.script)
 	stateObject.initScript = ethutil.CopyBytes(self.initScript)
-	//stateObject.gasPool.Set(self.gasPool)
 
-	return self
+	return stateObject
 }
 
 func (self *StateObject) Set(stateObject *StateObject) {
-	self = stateObject
+	*self = *stateObject
 }
 
 //

ethchain/state_transition.go

@@ -192,6 +192,8 @@ func (self *StateTransition) TransitionState() (err error) {
 		return
 	}
 
+	//snapshot := self.state.Copy()
+
 	// Process the init code and create 'valid' contract
 	if IsContractAddr(self.receiver) {
 		// Evaluate the initialization script
@@ -199,22 +201,25 @@ func (self *StateTransition) TransitionState() (err error) {
 		// script section for the state object.
 		self.data = nil
 
-		code, err, deepErr := self.Eval(receiver.Init(), receiver)
-		if err != nil || deepErr {
+		statelogger.Debugln("~> init")
+		code, err := self.Eval(receiver.Init(), receiver)
+		if err != nil {
+			//self.state.Set(snapshot)
 			self.state.ResetStateObject(receiver)
 
-			return fmt.Errorf("Error during init script run %v (deepErr = %v)", err, deepErr)
+			return fmt.Errorf("Error during init execution %v", err)
 		}
 
 		receiver.script = code
 	} else {
 		if len(receiver.Script()) > 0 {
-			var deepErr bool
-			_, err, deepErr = self.Eval(receiver.Script(), receiver)
+			statelogger.Debugln("~> code")
+			_, err = self.Eval(receiver.Script(), receiver)
 			if err != nil {
+				//self.state.Set(snapshot)
 				self.state.ResetStateObject(receiver)
 
-				return fmt.Errorf("Error during code execution %v (deepErr = %v)", err, deepErr)
+				return fmt.Errorf("Error during code execution %v", err)
 			}
 		}
 	}
@@ -235,7 +240,7 @@ func (self *StateTransition) transferValue(sender, receiver *StateObject) error
 	return nil
 }
 
-func (self *StateTransition) Eval(script []byte, context *StateObject) (ret []byte, err error, deepErr bool) {
+func (self *StateTransition) Eval(script []byte, context *StateObject) (ret []byte, err error) {
 	var (
 		block     = self.block
 		initiator = self.Sender()
@@ -255,14 +260,13 @@ func (self *StateTransition) Eval(script []byte, context *StateObject) (ret []by
 	})
 	vm.Verbose = true
 
-	ret, err, deepErr = Call(vm, closure, self.data)
+	ret, err = Call(vm, closure, self.data)
 
 	return
 }
 
-func Call(vm *Vm, closure *Closure, data []byte) (ret []byte, err error, deepErr bool) {
+func Call(vm *Vm, closure *Closure, data []byte) (ret []byte, err error) {
 	ret, _, err = closure.Call(vm, data)
-	deepErr = vm.err != nil
 
 	if ethutil.Config.Paranoia {
 		var (
@@ -274,21 +278,8 @@ func Call(vm *Vm, closure *Closure, data []byte) (ret []byte, err error, deepErr
 		if !valid {
 			// TODO FIXME ASAP
 			context.state.trie = t2
-			/*
-				statelogger.Debugf("(o): %x\n", trie.Root)
-				trie.NewIterator().Each(func(key string, v *ethutil.Value) {
-					v.Decode()
-					statelogger.Debugf("%x : %x\n", key, v.Str())
-				})
-
-				statelogger.Debugf("(c): %x\n", trie2.Root)
-				trie2.NewIterator().Each(func(key string, v *ethutil.Value) {
-					v.Decode()
-					statelogger.Debugf("%x : %x\n", key, v.Str())
-				})
-			*/
 
-			//return nil, fmt.Errorf("PARANOIA: Different state object roots during copy"), false
+			statelogger.Debugln("Warn: PARANOIA: Different state object roots during copy")
 		}
 	}
 

ethchain/vm.go

@@ -82,7 +82,7 @@ func (self *Vm) Printf(format string, v ...interface{}) *Vm {
 
 func (self *Vm) Endl() *Vm {
 	if self.Verbose {
-		vmlogger.Infoln(self.logStr)
+		vmlogger.Debugln(self.logStr)
 		self.logStr = ""
 	}
 
@@ -652,7 +652,7 @@ func (vm *Vm) RunClosure(closure *Closure) (ret []byte, err error) {
 				c := NewClosure(closure, contract, contract.initScript, vm.state, gas, closure.Price)
 				// Call the closure and set the return value as
 				// main script.
-				contract.script, err, _ = Call(vm, c, nil)
+				contract.script, err = Call(vm, c, nil)
 			} else {
 				err = fmt.Errorf("Insufficient funds to transfer value. Req %v, has %v", value, closure.object.Amount)
 			}
@@ -690,25 +690,24 @@ func (vm *Vm) RunClosure(closure *Closure) (ret []byte, err error) {
 
 				stack.Push(ethutil.BigFalse)
 			} else {
-				snapshot := vm.state.Copy()
+				//snapshot := vm.state.Copy()
 
 				stateObject := vm.state.GetOrNewStateObject(addr.Bytes())
 
 				closure.object.SubAmount(value)
-				// Add the value to the state object
 				stateObject.AddAmount(value)
 
 				// Create a new callable closure
 				closure := NewClosure(closure, stateObject, stateObject.script, vm.state, gas, closure.Price)
 				// Executer the closure and get the return value (if any)
-				ret, err, _ := Call(vm, closure, args)
+				ret, err := Call(vm, closure, args)
 				if err != nil {
 					stack.Push(ethutil.BigFalse)
 
 					vmlogger.Debugf("Closure execution failed. %v\n", err)
 
-					vm.err = err
-					vm.state.Set(snapshot)
+					//vm.state.Set(snapshot)
+					vm.state.ResetStateObject(stateObject)
 				} else {
 					stack.Push(ethutil.BigTrue)