Questions tagged [compilation]
For questions regarding contracts compilation.
129
questions
0
votes
1answer
10 views
How to be sure a bytecode is conform to a source code
Let's suppose a company shows me a contract's code source.
This code source has been audited and looks fine.
I trust this source code and i want to send Ether to this contract.
The company tells me ...
0
votes
0answers
14 views
How can I compile multiple smart contracts in a single compile.js file?
There is another post on this question but I don't find it useful enough so I thought I should ask again. In my compile.js file, I'm taking each smart contract's complied code and put it in a ...
2
votes
1answer
24 views
73: TypeError: “send” and “transfer” are only available for objects of type “address payable”
This is my simple code for following along a tutorial. We are building a Lottery Smart Contract.
However, I am failing to transfer the contract's balance to the winner. (see the last line inside of ...
0
votes
0answers
42 views
Slither Error: Invalid compilation: Solidity version not found ['']
I work with Truffle Fluidity to get an analysis on my contract. My contract is in contracts file that Truffle determines that. I preformed all steps that Truffle mentioned in document. I work with ...
0
votes
2answers
46 views
Resolve solidity compiler error
I am trying to create a smart contract and I am using ganache, visual studio code and truffle for that purpose. The versions installed in my windows system are:
Truffle v5.1.49,
Solidity v0.5.16 (solc-...
1
vote
0answers
42 views
How to test your smart contract against currently existing ones on mainnet locally using Truffle?
Background
I am fairly new to smart contracts and am currently experimenting using Ganache and Truffle to test on my local machine.
My goal would be to have the smart contract interacting with other ...
1
vote
1answer
29 views
Events declared in library are missed in contract ABI
DYDX contract SoloMargin is firing events like LogTrade, LogSell but they are not provided in ABI.
SoloMargin contract: https://etherscan.io/address/0x1e0447b19bb6ecfdae1e4ae1694b0c3659614e4e#code
...
2
votes
1answer
29 views
How can I use “@” (at sign) syntax with Remix?
I've seen multiple times Solidity contracts, which are using import "@somename/.../SomeContract.sol" syntax. Here's the example:
pragma solidity ^0.5.0;
pragma experimental ABIEncoderV2;
...
0
votes
1answer
120 views
ParserError: Expected ',' but got ';'
I`m trying compilate this code and getting Parse error
pragma solidity ^0.6.0;
contract ZooFactory {
event NewZoo(uint zooId, string name, uint dna);
uint dnaDigits = 24;
uint ...
0
votes
1answer
46 views
Does reentrancy attack happens as soon as the balance in storage is modified after the withdrawal?
I just saw something like this:
function sub(
uint a,
uint b
)
internal
pure
returns (uint)
{
require(b <= a, "SUB_UNDERFLOW");
return a - b;
}
function withdraw(...
0
votes
1answer
97 views
Why my contract binary does not set?
My project is in Truffle. I programmed a smart contract and want to deploy it with JavaScript. But the following error occurs:
Error: Contract error: contract binary not set. Can't deploy new ...
0
votes
1answer
52 views
How to include constructor arguments in bytecode for smart contract deployment in genesis block?
Please excuse if the title is not perfectly accurate but I had a hard time fitting my problem into 1 question. If you have a better title please feel free to suggest it and i will edit it.
I want to "...
0
votes
1answer
30 views
Compiling cpp-ethereum (aleth) sources as a part of my cpp project
I want to use cpp-ethereum aleth smart contracts sources in my altcoin project. My sources can compile with cmake or autotools system. I tried two ways to compile cpp-ethereum with my sources:
Using ...
4
votes
0answers
503 views
Stack too deep when compiling inline assembly
I'm running into a YulException: Stack too deep when compiling inline assembly: Variable headStart is 1 slot(s) too deep inside the stack. using a smart contract that has this function. I took this ...
0
votes
0answers
253 views
remix compiler just won't end compiling
I've just started my journy with etherium, so now I am trying to get my first script complied. I tried starting with this project
https://github.com/san-lee-ai/simple_auction
But I could not get the ...
1
vote
0answers
155 views
Contract can't import remote repository locally
I made a compiler script that takes all contracts in folder ./contracts/ and produces a .json for each contract, containing an ABI and Bytecode. This worked fine for a while. However, I added some ...
1
vote
1answer
157 views
Can I deploy smart contract written in an older version of solidity ? If yes how to recognize it in EVM?
If I can compile a smart-contract written in an older version say 0.1.3, can I still deploy it?
If I can, is there a way to look at EVM bytecode and tell that this smart contract is written with an ...
5
votes
1answer
847 views
Status of ABIEncoderV2 now
Do you know the current status of ABIEncoderV2?
I want to know the current status of ABIEncoderV2
Live projects using ABIEncoderV2 right now
Restriction on the normal encoder
Risks of using ...
0
votes
1answer
177 views
#pragma compilation Error [duplicate]
pragma solidity ^0.4.0;
contract test {
event test_value(uint256 indexed value1);
uint256 value_test;
function test_f() {
//value_test processing
test_value(value_test)...
1
vote
2answers
72 views
Get values from stack when certain Opcode is called
I am currently trying to use genetic algorithms to automatically generate test cases that for ethereum smart contracts similar to https://ieeexplore.ieee.org/abstract/document/7840029>this paper. In ...
0
votes
2answers
293 views
Error while compiling Solidity code via py-solc
I am getting the following error while attempting to compile Solidity code via py-solc. Is it due to a new update of py-solc? how can I fix it?
>>> from . import views
File "/home/manzik/...
4
votes
2answers
701 views
How to compile Solidity ^0.5.5 contract with Node.js?
I am terribly new in Solidity and now I try to learn how to compile a contract in Solidity ^0.5.5 (No versions below).
I have the contract as follow (UsersContract.sol)
pragma solidity ^0.5.5;
...
0
votes
1answer
1k views
Invalid implicit conversion from address to address payable requested
first of all really nice to find this forum, I'm starting coding Solidity.
Here the problem I get compiling a template of crowdsale smart contract ExampleTokenCrowdsale.sol, from this tutorial.
The ...
0
votes
0answers
18 views
Unexpected behaviour. Huge size increase when adding new SubContract()
I have a contract similar to:
contract Contract01 {
SubContract _refContract;
...
constructor() public {
refContract = new SubContract();
}
function setSubContractRef(SubContract ...
0
votes
1answer
74 views
how to change approveAndCall() function for upgraded compiler version of solidity 0.5.1 from 0.4.6?
Here is the code snipped which is used when I'am working with compiler version 0.4.6 :
function approveAndCall(address _spender, uint256 _value, bytes memory _extraData) public returns (bool success) ...
0
votes
3answers
609 views
Solidity ,Member“transfer”Not found or not visible after argument dependent lookup in address
pragma solidity ^0.4.11;
/**
* @title Ownable
* @dev The Ownable contract has an owner address, and provides basic authorization control
* functions, this simplifies the implementation of "user ...
1
vote
2answers
2k views
Unable to run truffle compile
I want to run truffle compile on my AWS Ubuntu 18.4 server. I'm able to compile the same contracts on my local with no compilation errors but when I tried to run truffle compile on AWS ubuntu server ...
1
vote
0answers
108 views
My code compiles on remix.ethereum.org but not on etherscan.io please help! [closed]
I get this error
" ParserError: Function, variable, struct or modifier declaration
expected.
function transferFrom(address _from, address _to, uint _value) public returns (bool)
^ " everytime ...
1
vote
1answer
64 views
How come npmjs website shows that Truffle latest version is 4.1.14, and that it was published 3 days ago?
According to this page, Truffle latest version is 4.1.14, and it was published 3 days ago.
However:
I have been using this version for months now.
I have noticed this "published 3 days ago" several ...
7
votes
1answer
315 views
When did the Ethereum “free memory pointer” change? (6060… -> 6080…)
I have been digging a bit deeper into the Ethereum bytecode with the specific goal to do contract verification from the source code.
I noticed, while doing some tests, that the initial bytes of the ...
2
votes
1answer
763 views
Remix is compiling the smart contract but not solc command
I am able to successfully compile a smart contract in remix IDE. However when I try to do the same with solc npm command, it shows a JSON error when compiling.
Voting.sol
pragma solidity ^0.4.25;
...
1
vote
1answer
423 views
Solidity: Function with same name but different parameter possible? [duplicate]
Will the contract auto detect wether I am calling the function with or without parameter?
pragma solidity 0.4.25;
contract A{
function test() public{
//do something
}
function ...
1
vote
1answer
155 views
Discrepancy in Solidity compiler output for Remix and offline (same version, same code)
I'm compiling the following contract locally and on Remix and getting two different bytecode results.
Contract
pragma solidity ^0.4.25;
contract ReadBool {
bool public flag;
function ...
2
votes
1answer
66 views
What is this evm code produced by solc in this public array checking, and why?
When solc creates code for arrays when they are declared public. In particular, it contains a check on the length of the array. For example, this:
contract OutOfBoundsException {
uint256[8] ...
1
vote
0answers
73 views
Error on contract constructor - CompilerError: Stack too deep, try removing local variables [duplicate]
I have the following constructor on a contract:
constructor(
string name,
string symbol,
uint8 tokenResolution,
string defaultUnderlying,
uint maturityTimestamp,
uint rate,
...
0
votes
2answers
503 views
Remix warning - Is constant but potentially should not be.
I am getting the warning on the code shown below. Could you please assist me know to resolve this warning ?
warning message - "Is constant but potentially should not be"
1
vote
0answers
26 views
Manually configure EVM Assembly Tag
I have read that Ethereum during the compilation splits the code into tags.
The solc optimizer doesn’t optimize across tags. If we consider “1+1”, it can be optimized to 0x2 if under the same tag:
/...
1
vote
0answers
43 views
Compiling from remix onto geth console
I found how to deploy a contract onto MEW, but I do not understand, partially due to meta references and missing/assumed knowledge. I'm just looking from help on a walk through. I'm including the ...
1
vote
3answers
1k views
Remix always throws the error: exceeds block gas limit
Dear Ethereum developers.
I started to learn Solidity this week and am trying to deploy a contract via Remix, but this doesn't really work.
Running environment is set as Web3 Provider.
(Because the ...
1
vote
1answer
750 views
Error compiling OpenZeppelin imported contracts
I'm running a truffle project and have imported OpenZeppelin contracts.
While running truffle compile I'm facing following error:
github.com/OpenZeppelin/openzeppelin-solidity/contracts/crowdsale/...
0
votes
1answer
78 views
Sending contract's source code to deployed contract in order to deploy it
I am writing a factory contract in solidity.
I want to be able to add some more contracts to be deployed by the factory after it has been deployed.
I thought sending the contract's source code to my ...
2
votes
1answer
103 views
Can't use constructor() when deploying a contract from ethereum wallet
Take the following code:
pragma solidity 0.4.24;
contract TestCoin {
mapping(address => uint256) public balanceOf;
uint256 public totalSupply;
constructor(uint256 initialSupply) ...
3
votes
1answer
122 views
v0.4.22 solc compile failing - not predictable behavior
Error:
Warning: Defining constructors as functions with the same name as the contract is deprecated. Use "constructor(...) { ... }" instead.
function CappedCrowdsale(uint256 _cap) public {
^ (...
1
vote
2answers
2k views
Solidity Compiler - Error: Identifier already declared
Full source code of the file 'Test.sol' :
pragma solidity ^0.4.23;
contract Mortal{
address owner;
string ownerInfo = "Contract Owner name XYZ";
constructor () public {
owner =...
2
votes
1answer
278 views
solc producing different contract binary depending on OS
I have a Linux, and another person has a Mac. We have the same solc compiler version, except for the OS extension (I have 0.4.24+commit.e67f0147.Linux.g++, they have 0.4.24+commit.e67f0147.Darwin....
0
votes
2answers
177 views
How do I find out what compiler version was used to deploy with MyEtherWallet
If I deploy a contract on MyEtherWallet.com how can I find out what compiler version was used, for verifying the code on etherscan, etc.?
0
votes
1answer
439 views
Deploying a smart contract with several solidity files
I have a contract contains 4 .sol files and when I generate its bytecode and api as follows:
> solc --bin GreenToken.sol
> solc --abi GreenToken.sol
I receive:
======= BasicToken.sol:...
1
vote
1answer
49 views
Use shared library type in contracts
I want to reuse on type DateRange in two contracts. However, I fail with multiple errors. Currently I have one error:
G21FE98E9 Member "endTicks" not found or not visible after argument-dependent ...
0
votes
0answers
420 views
Solcjs doesn't use the last version of compiler
I am compiling a contract using the npm package solcjs.
The package is at version 0.4.21 (npm view solc).
However compilation fails because my pragma is set to ^0.4.21 while solcjs states current ...
4
votes
1answer
383 views
Difference between unoptimized and optimized solidity code
I am trying to find a source on what the difference is between optimized and unoptimized code. My main question is what the unoptimized compiler does, especially in the sense of calling the SSTORE ...
