Questions tagged [solc]
Questions related to the compiler for Solidity: solc
276
questions
0
votes
1answer
23 views
How to compile OpenZeppelin's ERC20 smart contract using solc? [closed]
I want to compile ERC20 implementation from OpenZeppelin in my own project. For this purpose, I put several files into the erc20/src directory. ERC20.sol (the file I want to compile) is located in ...
2
votes
6answers
716 views
having a problem with solc-x version "solc 0.6.0 has not been installed"
I m trying to print out the variable (compiled_sol) as you will see in the code below of the python file named deploy.py so I can deploy my smart contract, but I keep running at this error
*****INFO: ...
0
votes
0answers
23 views
JSON interface problem
I'm wondering why I still get
"Error: You must provide the json interface of the contract when
instantiating a contract object."
I've tried plenty of solution from this community but they ...
0
votes
1answer
76 views
How to compile solidity docs for a particular compiler version
Im trying to run solc --userdoc --devdoc myContract.sol to generate docs. However, the compiler complains that the contract has a different pragma-version. In fact the contract pragma is at ^0.6.0 ...
2
votes
1answer
38 views
searching for an elegant solc compiler solution
I firstly had a problem with import statement inside my contracts, I figured out that the solc compiler didn't handle import statement, and that we needed to make out own. With the help of some nice ...
1
vote
2answers
337 views
Solc Compiler : File import callback not supported
As a context I am trying to fork uniswap v2 contracts using my own compiler and deploy files. I am not using truffle, as I want to deeply understand before using a framework.
When I run my compiler, I ...
1
vote
1answer
144 views
SolcInstallationError: Downloaded binary would not execute, or returned unexpected output
I am attempting to do the 'brownie compile' but each time it processes I am provided with 'SolcInstallation Error' - Downloaded Library would not execute or returned unexpected output. I have gone ...
0
votes
1answer
38 views
installing a different solc version [duplicate]
(current compiler is 0.5.16+commit.9c3226ce.Emscripten.clang - note that nightly builds are considered to be strictly less than the released version
pragma solidity ^0.4.19;
^----------------------^
...
2
votes
0answers
32 views
Solidity sourceMap and opcodes. No map entries for every code?
After compiling a simple contract, the output are these values:
"opcodes": "PUSH1 0x80 PUSH1 0x40 MSTORE CALLVALUE DUP1 ISZERO PUSH1 0xF JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP ...
asked Jun 30 at 16:41
Juan Ignacio Pérez Sacristán
3,0327 gold badges34 silver badges64 bronze badges
0
votes
1answer
61 views
mocha beforeEach is not running
beforeEach hook is not running. THis is a strange error, I googled but did not find anything. For anything strange, I delete node-modules and reinstall and it works but this time it did not work.
...
1
vote
0answers
54 views
Does solcjs replace solc? Is there a wrapper for the differences?
It at least appears to me that "solc" (the executable) doesn't exist anymore. Installing "solc" with nmp results in a command-line tool called solcjs ... fine, but they seem to ...
0
votes
1answer
69 views
Stack too deep error in Solidity v0.8.4, no error / debug info from compiler
I have been facing the Stack too deep error, and it is being displayed without any line number / contract info. It is compiling all my contracts together (over 10) and I have no clue where this error ...
0
votes
0answers
15 views
how much is the gas fee when forking uniswap with @openzeppelin/contracts?
I have tested it on remix , but in truffle is there anyway you can spend less? people have said it was 500 $ seems steep, if it's the truth is what i am curious of. has anyone successfully done it?
1
vote
0answers
12 views
Solc compiler shows only one compilation error at a time [closed]
The solc compiler reports only one error at a time. Is there any way to get the list of all errors in the sol file?
1
vote
1answer
120 views
Cannot send ETH to contract using solc 0.8.4 using truffle console (revert)
I spend like 6 to 8 hours on this issue, finally asking here on the following problem.
Goal
I want to sent ETH from one of the default Ganache addresses to the deployed contract SportBet.
Versions
...
2
votes
1answer
327 views
I ran into an error when using Pragma Solidity 0.4.24
I use pragma solidity 0.4.24 on the smart contract, but when running the truffle compile command, an error appears like this:
===========================
> Compiling ./contracts/ImageRegister.sol
&...
0
votes
1answer
49 views
Build with multiple solc versions?
My tokens and basic setup scripts are built in solidity 0.8.0 and I just downloaded GSN with OpenZeppelin because I need a platform which will fund users' few things. Now I can't compile because it ...
2
votes
0answers
348 views
Error: project ID does not have access to archive state
I am coding a script to deploy smart contracts using python web3, and I came across this error when I ran the script:
ValueError: {'message': 'Returned error: project ID does not have access to ...
3
votes
1answer
175 views
Adding new custom opcode to solidity
I have a problem with adding new opcode to solidity. I'm using solc (on C++) and geth(ethereum on Go). I want to add new opcode, that takes address payable, uint256, uint256, bytes memory and returns ...
0
votes
1answer
225 views
Web3j generate command not running
I am trying to generate a java wrapper class for a solidity contract, I have compiled the file and have the abi and bin file, but when I run the command as follows:
web3j solidity generate ...
1
vote
0answers
36 views
How do I get solcjs to compile yul
I want to write a smart contract using pure Yul but I have no idea how I'm meant to configure / run solcjs to compile my yul code down to bytecode. Any pointers would be much appreciated.
1
vote
1answer
35 views
Do file names need to be UTF-8 for solc to be able to compile them?
I combed through the Using the compiler section in the Solidity documentation, but I couldn't find an answer for my question.
Do file names need to be valid UTF-8 for solc to be able to compile them?
10
votes
1answer
2k views
Is the SafeMath library obsolete in solidity 0.8.0?
SafeMath was commonly used to revert the transaction on overflow and underflow, instead of allowing the number to wrap around. The solidity 0.8.0 release notes state:
Code Generator: All arithmetic ...
1
vote
0answers
54 views
TypeError: Library functions must be implemented if declared for solc compiler version ^0.6.0 library implementation
Suppose I have the following code:
// SPDX-License-Identifier: MIT
pragma solidity >=0.4.21 <0.7.0;
library SomeLib {
function add(uint256 a, uint256 b) public returns(uint256);
}
contract ...
0
votes
1answer
25 views
Library placeholders does not appear in bytecode of compiled contracts - Solc
I have compiled my contracts with solc module for nodejs. These contracts import and use some libraries. But in the deployed bytecodes of the contracts, there are no placeholders for librairies used ...
0
votes
1answer
581 views
Remix: ParserError: Expected pragma. import directive, or contract/library/interface definition
I'm trying to use Remix to interact with a suite of contracts. One of the contracts being used is OpenZeppelin's Ownable contract. I copied from the link above, and pasted it into Remix, with a few ...
0
votes
1answer
61 views
Deploying multiple contracts with different solc versions
I have a few contracts that I deploy with my 1_initial_migration.js. However some of them are of different solc version than others. Is there a way to change it programmatically before compiling and ...
0
votes
2answers
376 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-...
5
votes
1answer
4k views
Compiler solc expected a state variable declaration
I try example from book Mastering Ethereum:
contract Faucet {
function withdraw(uint withdraw_amount) public {
require(withdraw_amount<=10000000000000000);
msg.sender.transfer(...
0
votes
1answer
30 views
Updating array.length++ to array.push()
There is this piece of code that runs good with solc 0.5.0
updateValueAtNow(totalSupplyHistory, curTotalSupply + _amount);
updateValueAtNow(balances[_user], previousBalanceTo + _amount);
/// @dev `...
0
votes
0answers
13 views
Does the Bytecode and ABI generated for each contract also include it's imports?
If not, how does a contract such as an ERC20 get deployed if each output has its own ABI and Binary file?
When compiling with truffle, and looking at A.json (where A imports B and C) it seems that it ...
0
votes
1answer
56 views
I have a truffle version problem. and I've done it but it's not working
I've done npm install -g solc@0.4.16 and it reads solc@0.5.16 when doing the truffle version
compilers: {
solc: {
version: "^0.4.26", // A version or constraint - Ex. "^0.5....
3
votes
0answers
238 views
solc unable to import scoped packages
I am trying to import these lines on solidity and compile it with solc
import '@uniswap/v2-periphery/contracts/interfaces/IUniswapV2Router02.sol';
import '@uniswap/v2-periphery/contracts/interfaces/...
1
vote
1answer
50 views
Cannot reproduce Etherscan verified compilation for 0.6.6 contract
I'm trying to reproduce the following contract compilation on Etherscan: https://etherscan.io/address/0x7a250d5630b4cf539739df2c5dacb4c659f2488d#code.
Runtime bytecode on-chain
I can get the runtime ...
0
votes
1answer
154 views
Solc-js: error "before each" hook for "deploys a contract": ReferenceError: accounts is not defined
I have just started building contracts. Kindly help me in resolving this error. Attached image of error.
Lottery/contract/Lottery.sol:
pragma solidity ^0.4.17;
contract Lottery{
address public ...
0
votes
1answer
93 views
How do I receive a revert message using go-ethereum
How do I receive a revert message using go-ethereum?
receipt, err := bind.WaitMined(context.Background(), client, tx)
if err != nil {
fmt.Errorf(err)
}
fmt.Println(receipt.Status)
Now I can only ...
7
votes
5answers
4k views
Solidity Error: Struct containing a (nested) mapping cannot be constructed
My version of solc:
"solc": "^0.7.1",
When I try to construct a struct that contains mapping, I got this error:
"Struct containing a (nested) mapping cannot be constructed&...
0
votes
1answer
314 views
truffle solc specific compiler fail
,/C/Users/juhne/ipfs-image-dapp/contracts/Migrations.sol:1:1: ParserError: Source file requires different compiler version (current compiler is 0.5.16+commit.9c3226ce.Emscripten.clang - note that ...
2
votes
0answers
401 views
Conflicting solc versions on Truffle-test
I'm developing some smart contracts sing solc 0.7.0. I'm able to successfully compile and deploy the contracts, but when I try to run $truffle test I get the following error:
Using network '...
0
votes
2answers
667 views
solc-js error: "before each" hook for "deploys a contract": SyntaxError: Unexpected token u in JSON at position 0
The issue is probably here: const { interface, bytecode } = require('../compile');.
interface in the test file is undefined.
inbox/contracts/Inbox.sol:
pragma solidity ^0.7.0;
contract Inbox {
...
0
votes
0answers
32 views
How can know which is library's bytecode?
When I compile solidity file that has more then two contracts, Solc gives me some binaries.
That binaries include bytecode of library.
How can I know which one is library's bytecode if I don't have ...
0
votes
0answers
43 views
Why do solc v0.4.17 and v0.4.18 behave differently with the allow-paths primitive?
Here's an example contract:
Nobody.sol
pragma solidity ^0.4.17;
contract Nobody {
function die() public {
selfdestruct(msg.sender);
}
}
The solc JSON specification to compile the ...
1
vote
1answer
32 views
Compilation Eror: One contract accessing the variable of another contract
I am trying to compile two contracts. I am getting 'balance' variable error in "HoneyPotCollect.sol" contract. Is balance not a global contract variable? Somebody please guide me how to ...
-1
votes
1answer
81 views
Trying to compile running: 'node compile.js', but get error: “assert.js:399 throw err;” [Udemy 'Complete Developers Guide' Course]
This is my hands on contract with this Udemy Course - Ethereum-and-solidity-the-complete-developers-guide
This is the contract file, which contains two contracts - Campaign and FactoryCampaign. I ...
0
votes
1answer
85 views
Truffle and Buidler are compiling to very different bytecodes despite having same compiler settings
Truffle is giving > 24kB and out of gas errors, but Buidler is not. I have checked the number of characters in the 'deployedBytecode' of the JSON:
Buidler 33k characters (so 16.5kB)
Truffle 55k ...
1
vote
1answer
2k views
…is an abstract contract or an interface and cannot be deployed
I don't have any programming language experience. But i'm interested to learn how to create my own ERC20 token and it was sucessfully deployed without any error using remix ethereum. But, once i'm ...
0
votes
2answers
214 views
.json files for contracts are not created
I am really new in ethereum and solidity and I am having hard time to figure out how to get the .json equivalent for contracts.
I have the Campaign.sol inside the contractsFolder. The Campaign.sol ...
3
votes
1answer
157 views
abi.decode() and unused variables
I am decoding bytes as the following:
// Decode Solidity tightly packed arguments
(uint8 _, uint128 stakeId, address behalf) = abi.decode(userData, (uint8, uint128, address)); // solhint-...
0
votes
1answer
575 views
How can I get the ABI from solc.compile? (^0.6.4)
In pragma solidity ^0.6.4;
I wrote a contract and can get the byte code as follow:
const solc = require("solc");
const path = require("path");
const fs = require("fs");
const inboxPath = path....
2
votes
1answer
138 views
How to pass constructor parameters to solc?
I'm trying to compile a Smart Contract to bytecode using solc.
I'm on a Ubuntu VM so I have to rely on a simple-to-install cmd line application.
Compilation works fine but it seems like I can't pass ...
