Fatal error: Cannot read property 'code' of undefined

[aakilfernandes]

Getting this when I run truffle compile

Contract here: https://github.com/etherpot/contract/blob/master/app/contracts/lotto.sol

[tcoulter]

Sounds like your solidity compiler (or web3) is returning an unexpected object when compiling your contract. Can you run truffle compile --verbose-rpc and give me the output? (it'll be long)

[aakilfernandes]

Sure thing

{
"jsonrpc": "2.0",
"method": "eth_coinbase",
"params": [],
"id": 1
}
Compiling lotto.sol...
{
"jsonrpc": "2.0",
"method": "eth_getCompilers",
"params": [],
"id": 2
}
{
"jsonrpc": "2.0",
"method": "eth_compileSolidity",
"params": [
"contract Lotto {\n \n uint constant public blocksPerRound = 5760;\n \n uint constant public ticketPrice = 100000000000000000;\n \n uint constant public blockReward = 5000000000000000000;\n\n function getBlocksPerRound() constant returns(uint){ return blocksPerRound; }\n function getTicketPrice() constant returns(uint){ return ticketPrice; }\n \n struct Round {\n address[] buyers;\n uint pot;\n uint ticketsCount;\n mapping(uint=>bool) isCashed;\n mapping(address=>uint) ticketsCountByBuyer;\n }\n mapping(uint => Round) rounds;\n \n function getRoundIndex() constant returns (uint){\n \n return block.number/blocksPerRound;\n }\n\n function getIsCashed(uint roundIndex,uint subpotIndex) constant returns (bool){\n \n return rounds[roundIndex].isCashed[subpotIndex];\n }\n\n\n function calculateWinner(uint roundIndex, uint subpotIndex) constant returns(address){\n \n var decisionBlockNumber = getDecisionBlockNumber(roundIndex,subpotIndex);\n \n if(decisionBlockNumber>block.number)\n return;\n \n var decisionBlockHash = getHashOfBlock(decisionBlockNumber);\n var winningTicketIndex = decisionBlockHash%rounds[roundIndex].ticketsCount;\n \n var ticketIndex = uint256(0);\n\n for(var buyerIndex = 0; buyerIndex<rounds[roundIndex].buyers.length; buyerIndex++){\n var buyer = rounds[roundIndex].buyers[buyerIndex];\n ticketIndex+=rounds[roundIndex].ticketsCountByBuyer[buyer];\n\n if(ticketIndex>winningTicketIndex){\n return buyer;\n }\n }\n\n }\n\n function getDecisionBlockNumber(uint roundIndex,uint subpotIndex) constant returns (uint){\n return ((roundIndex+1)*blocksPerRound)+subpotIndex;\n }\n\n function getSubpot(uint roundIndex) constant returns(uint){\n return rounds[roundIndex].pot/getSubpotsCount(roundIndex);\n }\n\n function getSubpotsCount(uint roundIndex) constant returns(uint){\n \n var subpotsCount = rounds[roundIndex].pot/blockReward;\n\n if(rounds[roundIndex].pot%blockReward>0)\n subpotsCount++;\n\n return subpotsCount;\n }\n\n function cash(uint roundIndex, uint subpotIndex){\n \n var subpotsCount = getSubpotsCount(roundIndex);\n\n if(subpotIndex>=subpotsCount)\n return;\n\n var decisionBlockNumber = getDecisionBlockNumber(roundIndex,subpotIndex);\n\n if(decisionBlockNumber>block.number)\n return;\n\n if(rounds[roundIndex].isCashed[subpotIndex])\n return;\n \n var winner = calculateWinner(roundIndex,subpotIndex); \n var subpot = getSubpot(roundIndex);\n\n var isSent = winner.send(subpot);\n\n if(!isSent) return;\n \n rounds[roundIndex].isCashed[subpotIndex] = true;\n }\n\n function getHashOfBlock(uint blockIndex) constant returns(uint){\n var blockhash = block.blockhash(blockIndex);\n return uint(blockhash);\n }\n \n function getBuyers(uint roundIndex,address buyer) constant returns (address[]){\n return rounds[roundIndex].buyers;\n }\n\n function getTicketsCountByBuyer(uint roundIndex,address buyer) constant returns (uint){\n return rounds[roundIndex].ticketsCountByBuyer[buyer];\n }\n\n function getPot(uint roundIndex) constant returns(uint){\n return rounds[roundIndex].pot;\n }\n\n function() {\n \n var roundIndex = getRoundIndex();\n var value = msg.value-(msg.value%ticketPrice);\n\n if(value==0) return;\n\n if(value<msg.value){\n msg.sender.send(msg.value-value);\n }\n \n var ticketsCount = value/ticketPrice;\n \n if(rounds[roundIndex].ticketsCountByBuyer[msg.sender]==0){\n var buyersLength = rounds[roundIndex].buyers.length++;\n rounds[roundIndex].buyers[buyersLength] = msg.sender;\n }\n\n rounds[roundIndex].ticketsCountByBuyer[msg.sender]+=ticketsCount;\n rounds[roundIndex].ticketsCount+=ticketsCount;\n \n rounds[roundIndex].pot+=value;\n \n }\n\n}"
],
"id": 3
}
Fatal error: Cannot read property 'code' of undefined

[tcoulter]

Hmm, for some reason your output doesn't show what's being returned from web3. You should be getting output like this, where the input to web3 (specified by lines starting with >) is followed by output returned from web3 (lines starting with <). Are you getting this output when you run with --verbose-rpc, but github is clobbering it? Or is it not shown at all?

[aakilfernandes]

Nope, thats all I'm getting.

[tcoulter]

That's odd. I can't debug the issue without that output.

Can you tell me what truffle version you're running?

[aakilfernandes]

Truffle v0.0.16

[aakilfernandes]

[tcoulter]

Super weird. What Ethereum client are you using?

[tcoulter]

Would you mind upgrading to the latest Truffle on master and running the same command?

$ git clone https://github.com/ConsenSys/truffle.git
$ cd truffle
$ npm install -g .
$ cd to/your/project/dir
$ truffle compile --verbose-rpc

I'm assuming it has something to do with your Ethereum client, however, so I wouldn't be surprised if after following the steps above you receive the same error.

[aakilfernandes]

Sure thing.

Here's my geth

 > geth version
 Geth
 Version: 1.1.0
 Protocol Versions: [61 60]
 Network Id: 1
 Go Version: go1.5
 OS: darwin
 GOPATH=
 GOROOT=/usr/local/Cellar/go/1.5/libexec

[aakilfernandes]

Looks like a lot more came back this time =)

Aakils-Mac-mini:truffle aakilfernandes$ truffle compile --verbose-rpc

{
"jsonrpc": "2.0",
"method": "eth_coinbase",
"params": [],
"id": 1
}
< {
< "id": 1,
< "jsonrpc": "2.0",
< "result": "0xb735bf53abc79525a4f585a004a620d08cc66b27"
< }
Compiling lotto.sol...
{
"jsonrpc": "2.0",
"method": "eth_getCompilers",
"params": [],
"id": 2
}
< {
< "id": 2,
< "jsonrpc": "2.0",
< "result": [
< "Solidity"
< ]
< }
{
"jsonrpc": "2.0",
"method": "eth_compileSolidity",
"params": [
"contract Lotto {\n \n uint constant public blocksPerRound = 5760;\n \n uint constant public ticketPrice = 100000000000000000;\n \n uint constant public blockReward = 5000000000000000000;\n\n function getBlocksPerRound() constant returns(uint){ return blocksPerRound; }\n function getTicketPrice() constant returns(uint){ return ticketPrice; }\n \n struct Round {\n address[] buyers;\n uint pot;\n uint ticketsCount;\n mapping(uint=>bool) isCashed;\n mapping(address=>uint) ticketsCountByBuyer;\n }\n mapping(uint => Round) rounds;\n \n function getRoundIndex() constant returns (uint){\n \n return block.number/blocksPerRound;\n }\n\n function getIsCashed(uint roundIndex,uint subpotIndex) constant returns (bool){\n \n return rounds[roundIndex].isCashed[subpotIndex];\n }\n\n\n function calculateWinner(uint roundIndex, uint subpotIndex) constant returns(address){\n \n var decisionBlockNumber = getDecisionBlockNumber(roundIndex,subpotIndex);\n \n if(decisionBlockNumber>block.number)\n return;\n \n var decisionBlockHash = getHashOfBlock(decisionBlockNumber);\n var winningTicketIndex = decisionBlockHash%rounds[roundIndex].ticketsCount;\n \n var ticketIndex = uint256(0);\n\n for(var buyerIndex = 0; buyerIndex<rounds[roundIndex].buyers.length; buyerIndex++){\n var buyer = rounds[roundIndex].buyers[buyerIndex];\n ticketIndex+=rounds[roundIndex].ticketsCountByBuyer[buyer];\n\n if(ticketIndex>winningTicketIndex){\n return buyer;\n }\n }\n\n }\n\n function getDecisionBlockNumber(uint roundIndex,uint subpotIndex) constant returns (uint){\n return ((roundIndex+1)_blocksPerRound)+subpotIndex;\n }\n\n function getSubpot(uint roundIndex) constant returns(uint){\n return rounds[roundIndex].pot/getSubpotsCount(roundIndex);\n }\n\n function getSubpotsCount(uint roundIndex) constant returns(uint){\n \n var subpotsCount = rounds[roundIndex].pot/blockReward;\n\n if(rounds[roundIndex].pot%blockReward>0)\n subpotsCount++;\n\n return subpotsCount;\n }\n\n function cash(uint roundIndex, uint subpotIndex){\n \n var subpotsCount = getSubpotsCount(roundIndex);\n\n if(subpotIndex>=subpotsCount)\n return;\n\n var decisionBlockNumber = getDecisionBlockNumber(roundIndex,subpotIndex);\n\n if(decisionBlockNumber>block.number)\n return;\n\n if(rounds[roundIndex].isCashed[subpotIndex])\n return;\n \n var winner = calculateWinner(roundIndex,subpotIndex); \n var subpot = getSubpot(roundIndex);\n\n var isSent = winner.send(subpot);\n\n if(!isSent) return;\n \n rounds[roundIndex].isCashed[subpotIndex] = true;\n }\n\n function getHashOfBlock(uint blockIndex) constant returns(uint){\n var blockhash = block.blockhash(blockIndex);\n return uint(blockhash);\n }\n \n function getBuyers(uint roundIndex,address buyer) constant returns (address[]){\n return rounds[roundIndex].buyers;\n }\n\n function getTicketsCountByBuyer(uint roundIndex,address buyer) constant returns (uint){\n return rounds[roundIndex].ticketsCountByBuyer[buyer];\n }\n\n function getPot(uint roundIndex) constant returns(uint){\n return rounds[roundIndex].pot;\n }\n\n function() {\n \n var roundIndex = getRoundIndex();\n var value = msg.value-(msg.value%ticketPrice);\n\n if(value==0) return;\n\n if(value<msg.value){\n msg.sender.send(msg.value-value);\n }\n \n var ticketsCount = value/ticketPrice;\n \n if(rounds[roundIndex].ticketsCountByBuyer[msg.sender]==0){\n var buyersLength = rounds[roundIndex].buyers.length++;\n rounds[roundIndex].buyers[buyersLength] = msg.sender;\n }\n\n rounds[roundIndex].ticketsCountByBuyer[msg.sender]+=ticketsCount;\n rounds[roundIndex].ticketsCount+=ticketsCount;\n \n rounds[roundIndex].pot+=value;\n \n }\n\n}"
],
"id": 3
}
< {
< "id": 3,
< "jsonrpc": "2.0",
< "result": {
< "Lotto": {
< "code": "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< "info": {
< "source": "contract Lotto {\n \n uint constant public blocksPerRound = 5760;\n \n uint constant public ticketPrice = 100000000000000000;\n \n uint constant public blockReward = 5000000000000000000;\n\n function getBlocksPerRound() constant returns(uint){ return blocksPerRound; }\n function getTicketPrice() constant returns(uint){ return ticketPrice; }\n \n struct Round {\n address[] buyers;\n uint pot;\n uint ticketsCount;\n mapping(uint=>bool) isCashed;\n mapping(address=>uint) ticketsCountByBuyer;\n }\n mapping(uint => Round) rounds;\n \n function getRoundIndex() constant returns (uint){\n \n return block.number/blocksPerRound;\n }\n\n function getIsCashed(uint roundIndex,uint subpotIndex) constant returns (bool){\n \n return rounds[roundIndex].isCashed[subpotIndex];\n }\n\n\n function calculateWinner(uint roundIndex, uint subpotIndex) constant returns(address){\n \n var decisionBlockNumber = getDecisionBlockNumber(roundIndex,subpotIndex);\n \n if(decisionBlockNumber>block.number)\n return;\n \n var decisionBlockHash = getHashOfBlock(decisionBlockNumber);\n var winningTicketIndex = decisionBlockHash%rounds[roundIndex].ticketsCount;\n \n var ticketIndex = uint256(0);\n\n for(var buyerIndex = 0; buyerIndex<rounds[roundIndex].buyers.length; buyerIndex++){\n var buyer = rounds[roundIndex].buyers[buyerIndex];\n ticketIndex+=rounds[roundIndex].ticketsCountByBuyer[buyer];\n\n if(ticketIndex>winningTicketIndex){\n return buyer;\n }\n }\n\n }\n\n function getDecisionBlockNumber(uint roundIndex,uint subpotIndex) constant returns (uint){\n return ((roundIndex+1)_blocksPerRound)+subpotIndex;\n }\n\n function getSubpot(uint roundIndex) constant returns(uint){\n return rounds[roundIndex].pot/getSubpotsCount(roundIndex);\n }\n\n function getSubpotsCount(uint roundIndex) constant returns(uint){\n \n var subpotsCount = rounds[roundIndex].pot/blockReward;\n\n if(rounds[roundIndex].pot%blockReward>0)\n subpotsCount++;\n\n return subpotsCount;\n }\n\n function cash(uint roundIndex, uint subpotIndex){\n \n var subpotsCount = getSubpotsCount(roundIndex);\n\n if(subpotIndex>=subpotsCount)\n return;\n\n var decisionBlockNumber = getDecisionBlockNumber(roundIndex,subpotIndex);\n\n if(decisionBlockNumber>block.number)\n return;\n\n if(rounds[roundIndex].isCashed[subpotIndex])\n return;\n \n var winner = calculateWinner(roundIndex,subpotIndex); \n var subpot = getSubpot(roundIndex);\n\n var isSent = winner.send(subpot);\n\n if(!isSent) return;\n \n rounds[roundIndex].isCashed[subpotIndex] = true;\n }\n\n function getHashOfBlock(uint blockIndex) constant returns(uint){\n var blockhash = block.blockhash(blockIndex);\n return uint(blockhash);\n }\n \n function getBuyers(uint roundIndex,address buyer) constant returns (address[]){\n return rounds[roundIndex].buyers;\n }\n\n function getTicketsCountByBuyer(uint roundIndex,address buyer) constant returns (uint){\n return rounds[roundIndex].ticketsCountByBuyer[buyer];\n }\n\n function getPot(uint roundIndex) constant returns(uint){\n return rounds[roundIndex].pot;\n }\n\n function() {\n \n var roundIndex = getRoundIndex();\n var value = msg.value-(msg.value%ticketPrice);\n\n if(value==0) return;\n\n if(value<msg.value){\n msg.sender.send(msg.value-value);\n }\n \n var ticketsCount = value/ticketPrice;\n \n if(rounds[roundIndex].ticketsCountByBuyer[msg.sender]==0){\n var buyersLength = rounds[roundIndex].buyers.length++;\n rounds[roundIndex].buyers[buyersLength] = msg.sender;\n }\n\n rounds[roundIndex].ticketsCountByBuyer[msg.sender]+=ticketsCount;\n rounds[roundIndex].ticketsCount+=ticketsCount;\n \n rounds[roundIndex].pot+=value;\n \n }\n\n}",
< "language": "Solidity",
< "languageVersion": "0",
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< "abiDefinition": [
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/usr/local/lib/node_modules/truffle/lib/contracts.es6:161
contract["binary"] = result[key].code;
^
TypeError: Cannot read property 'code' of undefined
at Object.callback (/usr/local/lib/node_modules/truffle/lib/contracts.es6:161:45)
at /usr/local/lib/node_modules/truffle/node_modules/web3/lib/web3/method.js:165:21
at /usr/local/lib/node_modules/truffle/node_modules/web3/lib/web3/requestmanager.js:104:9
at /usr/local/lib/node_modules/truffle/lib/config.es6:337:11
at [object Object].request.onreadystatechange (/usr/local/lib/node_modules/truffle/node_modules/web3/lib/web3/httpprovider.js:114:13)
at [object Object].dispatchEvent (/usr/local/lib/node_modules/truffle/node_modules/web3/node_modules/xmlhttprequest/lib/XMLHttpRequest.js:572:25)
at setState (/usr/local/lib/node_modules/truffle/node_modules/web3/node_modules/xmlhttprequest/lib/XMLHttpRequest.js:591:14)
at IncomingMessage. (/usr/local/lib/node_modules/truffle/node_modules/web3/node_modules/xmlhttprequest/lib/XMLHttpRequest.js:431:13)
at IncomingMessage.emit (events.js:129:20)
at _stream_readable.js:908:16
at process._tickDomainCallback (node.js:381:11)
at Function.module.exports.loopWhile (/usr/local/lib/node_modules/truffle/node_modules/deasync/index.js:57:21)
at /usr/local/lib/node_modules/truffle/node_modules/deasync/index.js:29:18
at runTask (/usr/local/lib/node_modules/truffle/truffle.es6:41:5)
at Object. (/usr/local/lib/node_modules/truffle/truffle.es6:256:14)
at Module._compile (module.js:460:26)
at normalLoader (/usr/local/lib/node_modules/truffle/node_modules/babel/node_modules/babel-core/lib/api/register/node.js:199:5)
at Object.require.extensions.(anonymous function) as .es6
at Module.load (module.js:355:32)
at Function.Module._load (module.js:310:12)
at Function.Module.runMain (module.js:501:10)
at Object. (/usr/local/lib/node_modules/truffle/node_modules/babel/lib/_babel-node.js:144:25)
at Module._compile (module.js:460:26)
at Object.Module._extensions..js (module.js:478:10)
at Module.load (module.js:355:32)
at Function.Module._load (module.js:310:12)
at Function.Module.runMain (module.js:501:10)
at startup (node.js:129:16)
at node.js:814:3

[tcoulter]

Awesome, this is exactly what I needed. Looking into it.

[tcoulter]

Okay, so I hate to say this, but Truffle makes some assumptions about your contracts and so enforces those assumptions. Truffle can't find the compiled version of your code returned from your client because your contract name Lotto (capital L) is different from your contract's file name lotto.sol (lowercase l). If you rename your file to Lotto.sol, I bet you it'll work just fine.

Thanks for going through all this run around. Can't believe I didn't notice this before.

[tcoulter]

I could likely detect this case and print a warning message.

[aakilfernandes]

Nice =D. Looks like it works.

No problem glad to help. Thanks for the framework!