Questions tagged [compilation]
For questions regarding contracts compilation.
184
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How to Resolve Compiler Version Conflicts in Foundry Test Contracts?
I'm working on a Foundry project, and I'm encountering issues with compiler versions when trying to deploy Uniswap V3 core and periphery contracts in a test contract(i.e. UniswapTest shown below). The ...
- 1,054
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2
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71
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How to compile contracts independently with Hardhat?
I'm facing the following error, when compiling my contracts in Hardhat:
Warning: Contract code size exceeds 24576 bytes (a limit introduced in Spurious Dragon). This contract may not be deployable on ...
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5
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1
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283
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How to configure multiple solidity compiler versions in foundry?
I have a foundry project with files that have multiple solidity versions(0.7.x and 0.8.x). hardhat can relatively easily be configured to compile all files in the project as follows:
https://hardhat....
- 1,054
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1
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18
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Hardhat compile code on file change (like remix)
Is there any way (preferably an official Hardhat plugin) to automatically compile the Smart Contracts' code on file change?
I'd want to have the same developer experience as when using Remix, or ...
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2
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17
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Compilation Warning: Unnamed return variable can remain unassigned. Add an explicit return with value to all non-reverting name of variable
I am getting a compilation error
Warning: Unnamed return variable can remain unassigned. Add an explicit return with value to all non-reverting code paths or name the variable.
--> contracts/...
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1
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25
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"Warning: Unreachable code" in solidity when overriding a function to make it fail and that is used elsewhere
I have the following code sample
pragma solidity ^0.8.13;
error MyError();
abstract contract A
{
function f1() public pure virtual returns(bool);
function f2() public pure virtual returns(...
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2
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0
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91
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Compilation error in deploying a contract on zksync, using deploy zksync
I'm trying to compile the code but I keep getting an error. Here is the hardhat.config.ts code:
import "@matterlabs/hardhat-zksync-deploy";
import "@matterlabs/hardhat-zksync-solc";...
2
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1
answer
58
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error when working with arrays: DeclarationError: Undeclared identifier
**I am developing a smart contract distributor in the solidity language that will accept BEP20 tokens from the owner with the special contract address: 0x0000000000000000000000000000. the owner of the ...
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1
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1
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250
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Compiler error: Stack too deep
I am getting this error when trying to deploy my smart contract using zkSync but on a different chain (Polygon Mumbai):
CompilerError: Stack too deep. Try compiling with `--via-ir` (cli) or the ...
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1
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1
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66
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Compilation is successful but getting bytecode = "0x"
I am trying to compile this very simple smart contract but I am getting its bytecode = "0x":
// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.0;
import "@openzeppelin/...
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123
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How to compile with --bin option in solcjs?
I want to compile using --bin option because I want to get to see the bytecode of the compilation.
Using solc I know it is something like this: solc --bin
How can I achieve this using solcjs?
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1
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83
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Warning: This declaration shadows an existing declaration with a Struct
I 'm looking for a way to clean my compile warning, i have a Warning: This declaration shadows an existing declaration. on the function below.
The Transaction in the return is a Struct compose with id,...
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1
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46
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Is there an api that compiles solidity contracts?
I have a static webpage and it should remain static. In this website a user generates solidity files. I would like to compile them by sending the uncompiled solidity via an api to a compiler and then ...
- 305
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25
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Is there anyway to set a smart contract into Debug mode so only certain events are emitted?
I'd like to be able to set my Solidity smart contract into runtime DEBUG mode so that only certain events are defined and emitted in that mode, similar to a preprocessor directive. For example, I ...
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3
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Where are the smart contract constants stored?
I want to double-check something.
I had been writing upgradable smart contact that uses a lot of constants.
As far as I can see, smart contracts aren't storing constant variables in their storage.
...
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47
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How to import interface from lower level of Solidity?
I'm extending a large codebase with another contract and I need to import an interface. My new contract uses 0.8.9 but the rest of the codebase is in 0.6.12. I'm using Hardhat multi compile to do ...
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262
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How to unpack Tuple to Struct in Solidity?
I saw a similar question here which I tried to use in my example but I still get confused from the code. Can you tell me what is the difference between those two examples?
contract First {
struct ...
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1
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157
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help with DeclarationError: Undeclared identifier
thats my code:
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;
import "https://github.com/OpenZeppelin/openzeppelin-contracts/contracts/token/ERC721/ERC721.sol";
import "...
0
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2
answers
151
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TypeError: Contract should be marked as abstract
I'm getting this error:
TypeError: Contract "BaseRegistrarImplementation" should be marked as abstract.
--> Contracts/BaseRegistrarImplementation.sol:7:1:
|
7 | contract ...
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1
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1
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74
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Need help on solidity compiling
I am not getting expected files after: yarn add solc.
But the command works with some warning.
yarn add v1.22.19
warning package.json: No license field
warning package-lock.json found. Your project ...
- 645
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3
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300
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Contract is below size limit, but Hardhat says it's not?
When I run npx hardhat compile, Hardhat says one of my contracts is above the size limit.
But hardhat-contract-sizer says it's not.
See below:
Versions:
hardhat-contract-sizer version: ^2.5.1
...
0
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1
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300
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The file {location} is treated as local but is inside a node_modules directory | Error HH1006
I am trying to compile my contracts which are present in ./contracts directory (normal hardhat setup), I am not using deploy script to compile, just trying to compile with yarn hardhat compile, it is ...
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1
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7
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Large Size Disparity Between Contract and Its Library Wrapper
I have this contract called Pool.sol, and an external library for deploying it:
pragma solidity ^0.8.0;
// Contracts
import "../Pool.sol";
library DeployerOfPools {
function deployPool(...
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0
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149
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Find metadata URL from EVM bytecode
Currently, I am looking for a way to extract the metadata.json file URL from the ethereum bytecode. I have referred to this doc and figured out that metadata mapping is stored CBOR-encoded manner. ...
2
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1
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285
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Different bytecode when compiling from both solc-js and Remix IDE
Currently, I'm trying to get the bytecode from this contract code for example:
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
contract GetSet {
uint256 private total;
mapping(address =&...
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0
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1
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181
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DeclarationError: Undeclared identifier on mapping
I recently upgraded from solidity v0.4.25 to 0.8.6.
I noticed that expectedly required some code modifications, all of which we easy to debug resulting in a changed contract code. The final error on ...
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2
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1
answer
985
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Hardhat coverage tests failure - Stack too deep
I got my smart contracts ready over Hardhat and once I'm running hh test all the tests are passing successfully but while running hh coverage I'm getting the below error.
Any idea why the regular ...
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388
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Brownie unable to compile contracts on Apple M1 Mac
I recently got an M1 mac and I'm trying to compile my brownie project's contracts which compiled fine on my previous machine. I've installed Brownie v1.18.2 and when attempting to run brownie compile ...
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2
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804
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hardhat beginner "Nothing to compile" error
following hardhat beginner tutorial.
This is how I did it,
first run "npx hardhat " command and created basic sample project. After that run following command
npm install --save-dev @...
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1
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1
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35
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Any document for the layout of the smart contract binary?
I'm trying to write a disassembler to disassemble the binary code of smart contract. There are trailing bytes at the end, which causes disassemble problem. For example, the last few lines of this ...
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2
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2k
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Hardhat compile/deploy error
I'm following this tutorial for creating and deploying a smart contract (https://docs.alchemy.com/alchemy/tutorials/how-to-create-an-nft), but instead of deploying it on the ropstein test network I ...
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23
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What am I doing wrong? cannot compile
Hi for some reason i keep getting this error, while trying to compile, im using a code I found in forums, but i seem not to be able to understand why it doesnt compile, what am I missing?.
Thanks.
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Converting from Version 4 to Version 5: Problem with Compilation
I got the following Solidity code from:
https://www.zupzup.org/smart-contract-interaction/
pragma solidity ^0.5.6;
contract Caller {
function someAction(address addr) returns(uint) {
...
- 1,406
2
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0
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135
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Solidity array has no SLOAD optimization
Suppose a function writes to storage, and then reads from the same storage location before it has been overwritten. In solidity 0.8.11 in these cases the SLOAD gets optimized away (there is 1 SSTORE ...
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2
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1
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41
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Is there an EVM compiler that supports coroutines? (e.g. generator functions)
With coroutine I mean a subroutine that can be paused and resumed from another subroutine; preserving its internal state across pauses and resumes.
For example, a feature similar to:
Javascript's ...
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1
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0
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30
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What pragma version to use? [duplicate]
When I start with a project and have to decide which pragma I want to use, what are the main things I have to consider?
For simplicity, lets first assume I start a project from scratch, without ...
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245
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Solidity safeTransferFrom compile error
I am getting the following Solidity error in my contract and I'm not sure what the problem is: Expected identifier but got '('
Here is my contract stripped down to the problem.
// SPDX-License-...
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3
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1k
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Problem compiling subgraph with graph-ts new version
I'm getting this error: ERROR TS2322: Type '~lib/@graphprotocol/graph-ts/common/value/Value | null' is not assignable to type '~lib/@graphprotocol/graph-ts/common/value/Value'.
I know it is for this ...
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27
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Does solidity language optimizes code or is it dependent on Compiler for gas/machine cycles?
Take the following case
uint256 x = z * 100/1000;//1st statement
uint256 y = z * 1/10;// 2nd statement
Now in terms of Gas and Machinecyles as well as will solidity spend more computational ...
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2
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2
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1k
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Can`t fix: AssertionError [ERR_ASSERTION]: Invalid callback object specified
I´m doing my first smart contract, these errors are probably no npm but versioning problems. Though intensive research I could not find a proper way to fix it. Thank you for your help!
const assert = ...
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415
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DeclarationError: Undeclared identifier. Did you mean "balances" or "balanceOf"?
I have gone through the similar questions and weirdly, none of them seem to solve this problem.
I am creating a simple token contract
contract Token {
mapping(address => uint) public balances;
...
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2k
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How to override when inherited contracts have same method name but slightly different signatures?
I'm inheriting 2 abstract contracts having the same function name but slightly different signature.
These are the 2 base contracts:
abstract contract Base1 {
function foo() internal view virtual ...
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0
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25
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Stack too deep, try removing local variables when using remix [duplicate]
while compiling in remix i get the above error:
CompilerError: Stack too deep, try removing local variables.
--> work/youkie.sol:1015:80:
|
1015 | (uint256 rAmount, uint256 ...
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688
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How to generate Natspec docs using version 0.6.x of the Solidity compiler
I'm trying to run solc --userdoc --devdoc myContract.sol to generate natspec. However, the compiler complains that the contract has a different pragma-version. In fact the contract pragma is at ^0.6....
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303
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Truffle Compile Fails with Error " Expected pragma, import directive or contract/interface/library/struct/enum/constant/function definition"
When running truffle compile in the root directory of my project I get the following error:
ParserError: Expected pragma, import directive or contract/interface/library/struct/enum/constant/function ...
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2
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732
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Is it possible to import smart contracts with different compiler versions?
I'm using hardhat to compile my contracts. I am aware that hardhat is good at compiling contracts with different pragma versions, however, the contracts can't compile because they're importing ...
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1k
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Stack too deep when compiling inline assembly: Variable headStart is 1 slot(s) too deep inside the stack [duplicate]
I tried to add another parameter to my constructor and I get the following error when compiling with hardtest to test. If I remove one parameter it compiles again, so clearly it's related to the ...
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1k
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JSON-RPC Error - Exection Reverted (-32000) / Empty ABI
I am attempting to deploy a BEP20 contract on BSC testnet via Remix. I am using compiler v6.12 and am successfully compiling my Solidity. However, when I deploy the contract, I am receiving the ...
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0
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97
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Error while compiling with nodejs
Im trying to set up the compiler for my project.
sol:
pragma solidity ^0.4.25;
contract Inbox {
string public message;
function Inbox(string initialMessage) public{
message = ...
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18
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How to locate the source codes by PC for smart contracts
Similar to the debugger module in remix https://remix.ethereum.org/, it can locate the source codes of each PC. Now, I want a tool that can locate the source codes given a PC for large-scale smart ...
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