Questions tagged [solc]
Questions related to the compiler for Solidity: solc
1
vote
1answer
22 views
How to compile solidity files in nodejs using solc@0.5.4?
I am using node@10.14.2 and solc@0.5.4 to compile solidity files using the following code:
var solc = require('solc');
var input = {
language: 'Solidity',
sources: {
'Bon.sol':{
content:...
1
vote
2answers
38 views
Unable to get abi and bytecode when compiling using solc
I am new to solidity and am following a tutorial that uses solidity compiler version 0.4.25. In the tutorial, solc.compile is used in a compile.js file followed by extract abi and bytecode and ...
1
vote
1answer
12 views
UnimplementedFeatureError: Only byte arrays can be encoded from calldata currently
I received the error message UnimplementedFeatureError: Only byte arrays can be encoded from calldata currently from the compiler, but without any reference to a file or line.
In a big project, and ...
2
votes
1answer
54 views
What is the behavior of solc with optimizer disabled?
When enabling the optimizer the documentation of solc tells you that you can choose between optimizing the gas cost at deployment or the gas cost at execution by setting the runs parameter.
But what ...
1
vote
1answer
53 views
Importing in SOLC to deploy smart contract
I don't run an Ethereum framework like Truffle and I want to deploy a smart contract using infura node.
The smart contract is very simple:
pragma solidity ^0.5.2;
import "http://github.com/...
0
votes
1answer
91 views
Upgrading to solidity version 0.5.0 getting deployment failed error with same smartcontract perfectly deployed on 0.4.24
The same smart contract is running smoothly in solidity version 0.4.24 but now when I update the solidity version and solving a lot of bugs inside my smart contract I intended to deploy that in ...
0
votes
0answers
21 views
Why the same contract has more bytecode size in solidity 0.5 in compare to 0.4.24?
My earlier contract was compatible with solc@0.4.24. Now I am upgrading my contract to make it compatible with solidity 0.5 but it leads to an increase in bytecode size. AFAICT There is no change in ...
1
vote
1answer
118 views
Switch solc compiler versions
I have solc v0.5.2 on my system, but I have several contracts, that require solc < v0.5, so that I get errors:
Error: Source file requires different compiler version
What is the best way to run ...
1
vote
0answers
12 views
Compile Solidity on openbsd
i have tried several branches and all fails, has anyone got this working on openbsd?
an issue has been created on github about this aswell
https://github.com/ethereum/solidity/issues/5728
0
votes
0answers
20 views
solc/wrapper not working with reactjs
My compile.js code:
var wrapper = require('solc/wrapper')
var solc = wrapper(window.Module)
const Compile = (code,name) => {
return solc.compile(code, 1).contracts[':'+name];
};
export default ...
0
votes
1answer
177 views
Not able to get rid of error from solc-js “AssertionError [ERR_ASSERTION]: Invalid callback specified.”
const path=require('path');
const fs=require('fs');
const solc=require('solc');
const InboxPath=path.resolve(__dirname,'contracts','Inbox.sol');
const source=fs.readFileSync(InboxPath,'utf8');
solc....
2
votes
1answer
99 views
Solc compile contracts with 5.0.0
I was following this guide for compiling my contracts How To: Compile a Solidity Smart Contract Using Node.js but "solc.compile(input, 1)" is not working anymore. I have problems understanding how to ...
1
vote
0answers
18 views
Web3JS throws InvalidResponse without Ganache core ever receiving a request?
Versions:
Ubuntu 18.04 LTS
Node.JS: 8.3.0
WebJS:
web3: ^1.0.0-beta.37
web3-utils: ^1.0.0-beta.36
npm: 5.6.0
Truffle version 5.x (latest)
I have traced through the HttpProvider code in the Web3 ...
1
vote
1answer
55 views
“Cannot import url”, “File outside of allowed directories” using --standard-json
I'm trying to understand how to use solidity's JSON input-output API. Here's my json file;
{
"language": "Solidity",
"sources": {
"StandardToken.sol": {
"urls": [
"file:///home/...
1
vote
1answer
101 views
Recently upgraded Solc and Web3. Transactions with zero addresses now reverting with “invalid address” message?
I recently upgraded Web3JS and Solc. Now every time I pass a zero address to a Solidity contact method the transaction reverts with an "invalid address" message. This message appears to be coming ...
2
votes
2answers
182 views
Error when calling the selfdistruct method in solidity
I am quite new to solidity, and I have not managed to find a solution for this problem.
I am passing the function an address but it says the following:
"Invalid type for argument in function call. ...
2
votes
1answer
25 views
What about calls you can do safely in constructor?
As a matter of fact, there is more than one discussion about what are the call you can safely do in the constructor.
Someone thinks “avoid all external call”, some other says “avoid to use ‘this’ or ...
3
votes
1answer
31 views
SOLIDITY: is anywhere formalized the assignment operator behaviour in nested statements?
As a matter of fact, solidity seems to have same behaviour of C in nested assignment.
I.e. running the sample test contract below, calling nestedSum(1) results in the following: a=38, b=16, c=4
...
2
votes
1answer
424 views
I got error when npm install -g solc [closed]
I got error when try to install solc using
npm install -g solc
here is the error:
erfans-MacBook-Pro:01 erfanandesta$ npm uninstall -g solc
npm WARN checkPermissions Missing write access to /usr/...
1
vote
1answer
160 views
How to access string arguments from calldata in external functions? (0.5.X)
With the introduction of Solc 0.5.X , parameter memory locations for arrays (and strings/bytes) must be made explicit. For external functions, this memory location is required to be specified as ...
1
vote
1answer
47 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 ...
0
votes
1answer
406 views
solc.compile() @0.5.0 is not working like 0.4 version
I read the solc document and followed the instruction.
When I am using solc@0.4.24 version, compile command is working fine
solc.compile(smartContractPath, 1);
When I switched to solc@0.5.0 version, ...
7
votes
1answer
90 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 ...
3
votes
1answer
56 views
How to match the etherscan.io bytecode using the solc compiler?
Trying to do some simple sanity checks between the verified contracts on etherscan.io and the bytecode available on the blockchain for those contracts.
I picked a random contract to test:
https://...
2
votes
1answer
582 views
truffle compile with solc 5.0.0 error: solc.compileStandard is not a function [duplicate]
Trying to use Solidity v0.5.0 with Truffle. Starting v5.0.0 Truffle allows setting solc version in truffle.js, as per its docs
I tried both native
compilers: {
solc: {
...
4
votes
2answers
93 views
Do intermediate memory variables cost gas?
Example without an intermediate variable:
uint startTime = 9;
uint allowedTime = 7;
require(now > startTime + allowedTime);
Example with an intermediate variable:
uint startTime = 9;
uint ...
2
votes
1answer
55 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] ...
0
votes
0answers
60 views
How to compile solidity in the browser without using browser-solc?
I am thinking of implementing an API call to compile some source code entered by a user and then return the bytecode for deployment using metamask.
I have tried browser-solc but it had some errors ...
1
vote
1answer
153 views
How can we compile multiple smart contracts by compile.js file?
My compile.js file is below
const path = require('path');
const fs = require('fs');
const solc = require('solc');
const ballotPath = path.resolve(__dirname, 'contracts', 'blocktitans_ballot.sol');
...
1
vote
0answers
18 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
2answers
115 views
How to compile and deploy smart contracts programmatically with Infura in NodeJs
I understand that i will need to be able to unlock my account in web3 to be able to deploy smart contracts. It's all good except i'm using Infura's hosted network instead which prevents me from ...
2
votes
1answer
34 views
Why solc does not detect issue in this code?
I wrote a sample Solidity code below: in function call() of contract sample_call, I make a call to function add_car() function of another contract sample, but this is a bug, since variable v is never ...
0
votes
1answer
306 views
Can't get contract to contract function calls working
I can't quite seem to figure out an issue preventing contract to contract function calls.
I'm feeling fairly confident it's something with how I'm deploying.
Preface: I have a Parent and Child ...
1
vote
1answer
217 views
warning about security/enforce-explicit-visibility: No visibility specified explicitly for multiply function [duplicate]
my ide is vs(can find solc version is 0.4.17),but my solcjs is 0.4.24.when I run this simple code
`pragma solidity^ 0.4.45;
contract test{
function multiply(uint a) constant returns(uint d){
...
1
vote
1answer
78 views
What is the “clone-bin” output in solc?
When it comes to bytecode solc has three types of outputs:
--bin Binary of the contracts in hex.
--bin-runtime Binary of the runtime part of the contracts in hex.
--clone-bin ...
1
vote
1answer
235 views
Compile multiple contracts
When compiling a .sol file that contains multiple contracts you get multiple binaries.
How do I know which one belongs to the root contract?
For example looking at etherdelta contract code I can see ...
0
votes
0answers
30 views
Cannot mint when creating contract in Ropsten nor in Remix
Code: https://gitlab.com/snippets/1730722
After I compiled the code using solc I embedded the ABI and the binary data. I instantiated the contract and I'm able to call for example the owner or the ...
0
votes
1answer
26 views
Solidity says my function can by marked as view but my code changes state?
Given the code below, when I compile the code with Remix it says the function processBandPayments() can be marked as view. This concerns me greatly since in my mind, the code is changing state by ...
0
votes
0answers
39 views
solc compiles same contract to different binaries
I'm running solidity compiler over some solidity file to get the binary.
I'm running solc once via command line and once via java app that runs solc process.
I get 2 binaries at the same length but ...
0
votes
0answers
116 views
Transaction remains pending on RINKEBY network
var Web3 = require('web3');
var Tx = require('ethereumjs-tx');
const fs = require('fs');
const solc = require('solc');
const generateWallet = require('ethereumjs-wallet');
var toAccount = 'TO ACCOUNT';...
0
votes
1answer
46 views
CONNECTION to Rinkeby showing false, contract not getting Deployed
SOURCE CODE
var Web3 = require('web3');
var Tx = require('ethereumjs-tx');
const fs = require('fs');
const solc = require('solc');
var web3 = new Web3();
web3.setProvider(new web3.providers....
0
votes
1answer
94 views
How to identify the bytecode of a single function
I am trying to generate the bytecode for a single function. I need to avoid any setup/teardown that may occur in the contract as I am trying to get a precise measurement of the execution time in the ...
0
votes
0answers
136 views
solc: unrecognised option '--add-std' message during loadScript() call
I'm installing a Quorum example using instructions from this page: quorum-docker-Nnodes.
...Using these versions of geth and solc on Ubuntu 16.04..
geth Version: 1.8.10-stable-eae63c51
solc Version:...
3
votes
1answer
83 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
423 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
165 views
what's the “Contract Creation Code” in Etherscan Verfied Contract?
what's the difference between "Contract Creation Code" in Etherscan Verfied Contract and the bytecode compiled by Solc?
1
vote
1answer
161 views
Why is my transaction not visible on ropsten.etherscan
I am testing a contract on a Ropsten network using geth 1.8.8 with command line:
geth --testnet --datadir=""
In order to connect to geth I use web3js version 1, beta 34 running from node.js.
...
0
votes
0answers
28 views
Does the solC compiler work in the geth Javascript console anymore
does the solC compiler work in the javascript console anymore, and if it does how can I install it. I have tried using the compiler methods in the javascript console api however they do not work and ...
0
votes
0answers
70 views
Solc compatibility with various versions of Geth
I'm looking for information about what minimal version of solc is compatible with geth, including older versions of geth (1.6+).
2
votes
1answer
145 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....
