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Fixed deref ptr

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This commit is contained in:
obscuren 2014-09-19 13:19:19 +02:00
parent 863785a520
commit 80261c803a
3 changed files with 26 additions and 3 deletions
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8
ethchain/block_chain.go
View File

@ -164,6 +164,7 @@ func (bc *BlockChain) setLastBlock() {
bc.Add(bc.genesisBlock)
fk := append([]byte("bloom"), bc.genesisBlock.Hash()...)
bc.Ethereum.Db().Put(fk, make([]byte, 255))
bc.CurrentBlock = bc.genesisBlock
}
// Set the last know difficulty (might be 0x0 as initial value, Genesis)
@ -201,10 +202,13 @@ func (bc *BlockChain) GetBlock(hash []byte) *Block {
func (self *BlockChain) GetBlockByNumber(num uint64) *Block {
block := self.CurrentBlock
for ; block.Number.Uint64() != num; block = self.GetBlock(block.PrevHash) {
for ; block != nil; block = self.GetBlock(block.PrevHash) {
if block.Number.Uint64() == num {
break
}
}
if block.Number.Uint64() == 0 && num != 0 {
if block != nil && block.Number.Uint64() == 0 && num != 0 {
return nil
}

4
ethutil/rlp.go
View File

@ -15,6 +15,10 @@ type RlpEncodeDecode interface {
RlpValue() []interface{}
}
func Rlp(encoder RlpEncode) []byte {
return encoder.RlpEncode()
}
type RlpEncoder struct {
rlpData []byte
}

17
ethvm/vm.go
View File

@ -670,9 +670,13 @@ func (self *Vm) RunClosure(closure *Closure) (ret []byte, err error) {
stack.Pop()
case DUP1, DUP2, DUP3, DUP4, DUP5, DUP6, DUP7, DUP8, DUP9, DUP10, DUP11, DUP12, DUP13, DUP14, DUP15, DUP16:
n := int(op - DUP1 + 1)
stack.Dupn(n)
v := stack.Dupn(n)
self.Printf(" => [%d] 0x%x", n, stack.Peek().Bytes())
if OpCode(closure.Get(new(big.Int).Add(pc, ethutil.Big1)).Uint()) == POP && OpCode(closure.Get(new(big.Int).Add(pc, big.NewInt(2))).Uint()) == POP {
fmt.Println(toValue(v))
}
case SWAP1, SWAP2, SWAP3, SWAP4, SWAP5, SWAP6, SWAP7, SWAP8, SWAP9, SWAP10, SWAP11, SWAP12, SWAP13, SWAP14, SWAP15, SWAP16:
n := int(op - SWAP1 + 2)
x, y := stack.Swapn(n)
@ -1004,3 +1008,14 @@ func (self *Message) Exec(codeAddr []byte, caller ClosureRef) (ret []byte, err e
return
}
// Mainly used for print variables and passing to Print*
func toValue(val *big.Int) interface{} {
// Let's assume a string on right padded zero's
b := val.Bytes()
if b[0] != 0 && b[len(b)-1] == 0x0 && b[len(b)-2] == 0x0 {
return string(b)
}
return val
}