Questions tagged [out-of-gas]
exception generated when computations consume all the gas available to a transaction
189
questions
-1
votes
1answer
49 views
Unable to test a smart contract on ropsten test network
I launch and verify an ERC20 based smart contract on a ropsten test network which allows user to interact with the contract (send eth to it and the contract automatically send token in returns as in ...
0
votes
1answer
31 views
Why do I always get “Returned values are not valid, did it run Out of Gas”?
I'm new on Ethereum blockchain and I'm working on deploy and using smart contract using truffle on my private blockchain.
I have followed exactly this guide
https://www.trufflesuite.com/docs/...
2
votes
1answer
43 views
How to avoid an error caused by wrong determining of gas consumption
I have a function that is being called by multiple users (say 3). That value is set by owner earlier as a constant. Inside this function there's a check whether it's the last user (3) or not. If yes ...
2
votes
1answer
39 views
How to divide and allocate the amount to token holders without loops?
I have a smart contract that keeps record of the people holding the tokens in form of array of addresses. An owner of the smart contract, whenever, sends some ethers to the contract these ethers shall ...
0
votes
1answer
17 views
When calling a contract from an other contract, what happends if the value of callgas argument is above availaible gas?
In such case, the value is replaced with available gas right ?
Or Does an out of gas exception is thrown ?
1
vote
2answers
119 views
Error: gas required exceeds allowance or always failing transaction in Remix using Ropsten network
I am facing this error
, My Contract is quite simple
pragma solidity ^0.5.0;
contract sendEther {
address payable sender;
function showReceiver() public view returns (address payable) {
...
1
vote
1answer
50 views
I've given Gwei less than 0.1 for a transaction, and it's been an hour, and it is not showing up in etherscan!
I know I pretty much messed up with Gwei, I've given it < 0.1. My doubt is if the transaction gets failed will the funds get back to my wallet or lost forever and how much time will it take for the ...
1
vote
1answer
60 views
TX fails in private blockchain when trying to access an ERC20 contract from another contract
I have an ERC20 contract and I am trying to access it from another contract, which is a Faucet. In the Faucet I have a function to query an account's balance, and another one to transfer some tokens ...
0
votes
2answers
43 views
Out of Gas Exception on Tobalaba
I deployed the same contract to Rinkeby, Ropsten and Tobalaba networks. Rinkeby and Ropsten work fine, but the contract execution on Tobalaba fails because of an out-of-gas exception:
https://tobalaba....
0
votes
0answers
86 views
Transaction to Smart Contract runs out of gas on Ropsten but not on Rinkeby
the following execution of my smart contract function runs out of Gas on the Ropsten network, but works fine on Rinkeby, do you have an idea why this happens?
struct vehicleData{
string ...
1
vote
1answer
583 views
Error set address/adding data, error: “gas required exceeds allowance or always failing transaction and the function doesn't work”
I'm trying to do a data access control system with smart contract. I have 3 entity:
Client: who can get data and set address of Oracle
Oracle: who can add data and have getData() function
RBAC: Role ...
2
votes
1answer
700 views
Metamask Failed transaction when sending out BAT tokens
I've been trying to send some BAT tokens out of my metamask wallet for quite awhile and it keeps eating up all my eth gas fees. I even increased the gwei fee to 100 and paid .50 USD as the fee. And it ...
1
vote
0answers
21 views
Why is one of my transactions using more gas when both carry out the same function of sending ether?
Below are two functions that I have in a simple lease smart contract. I am running a TestRPC node with Remix on version 0.5.1.
When I call the terminate function, it executes and terminates the ...
0
votes
1answer
43 views
Possible replay attack when paying to smart contract
I am afraid of a possible replay attack when paying to a smart contract.
Given these 3 assumptions
An action gas cost may change according to the state of the blockchain (even if its the same action)....
1
vote
1answer
45 views
why use up all the gasLimit when use assembly and revert together?
try to call erc20 token's transferFrom() using assembly(to save some gas), code like this:
pragma solidity ^0.4.24;
contract TestAssemblyAndRevert {
function test(address from, address to, ...
1
vote
1answer
37 views
What is the advantage and disadvantage of deploying Erays on Ethereum?
I have read this paper, Erays: Reverse Engineering Ethereum's Opaque Smart Contracts. They proposed this reverse engineering tool for Ethereum smart contracts. it will take as input a compiled EVM ...
0
votes
1answer
20 views
Can transaction fail after being sent?
I wonder what would happen in following hyphotwtical scenario.
Transaction is being sent with blockchain state A. In this state transaction consume 100_000 gas and sender has enough funds to pay for ...
0
votes
1answer
62 views
Sending funds to a possible smart-contract
When sending funds to an Ethereum address,
Should my wallet check in the blockchain whether the address is associated with a smart contract? In order to choose the gas limit automatically.
If someone ...
1
vote
2answers
879 views
Out of gas error for a view function
having a problem with calling a method of my deployed contract in the main Ethereum network.
I have a 'view' function which returns user's refund balance, everything worked fine in my local ...
2
votes
1answer
700 views
Running out of gas during a deploy due to a large number of require() statements?
I have a smart contract that has a fair number of functions, but a large number of require() statements because I carefully check every incoming parameter and some intermediate calculation results too....
1
vote
2answers
246 views
transaction fails due to out of gas in mainnet
Transaction fails due to out of gas though gas used by transaction is 22.32 % . What might be the reason ? I have give enough gas : 203000 wei.
Here is the link of the transaction
1
vote
1answer
96 views
What should be optimal gas limit and gas price for 80 addresses airdrop?
This is my airdrop function:
mapping (address => bool) public airdrops;
function airdropTokens(address[] _recipient, uint256[] _tokens) public onlyOwner{
uint airdropped;
for(uint256 i = 0; i< ...
1
vote
1answer
1k views
Truffle contract deployment either exceeds block gas limit or out of gas
I've been having the same issue when I was trying to deploy a contract using truffle develop console. The contract is not extremely big but does initiate two other contracts when called a certain ...
1
vote
1answer
28 views
Why aren't costs “advertised” or at least knowable so funds aren't lost?
I'm admittedly new to all of this, but as I learn about the transaction model, it seems to be a confusing business model at the very least. I can understand that the price of gas fluctuates or can be ...
5
votes
2answers
2k views
ERC20 :: Transferring tokens without sender gas
Let's assume we have 50 ERC20 tokens that we would like to support (deposits) on our website. People are depositing tokens to the ETH adresses we've generated for them.
In the end of the day, we want ...
3
votes
1answer
29 views
Contract design by contract -> correctness and maximum gas consumption
This question is a general design question that regards contract correctness and the functions I list here are just examples.
As I develop on Ethereum, it becomes aparent to me that it might be ...
1
vote
2answers
68 views
Supply gas from contract to execution of function
let's say I have something like this
function usuallyCheapFunction() external {
... do something cheap...
if(rareCondition == true) {
expensiveCleanupFunction();
}
}
function ...
1
vote
1answer
27 views
Loop with upper bound of iterations / loop variant
Is it possible somehow to create a loop that solidity will recognize as having an upper bound of iterations for gas estimations?
Something like a loop variant in Eiffel (https://www.eiffel.org/doc/...
3
votes
2answers
145 views
If Metamask Gas calculations are nearly perfect why do we still get out of Gas error?
Pardon me if this question seems a bit naive.
I have written a smart contract (for proof of existence) and simulating it in Ganache. Inside it I have logic to store data in a mapping created between ...
0
votes
1answer
53 views
Contract deployment out of gas, but was created anyway?
I have deployed a contract with Parity on Kovan, which did not show up in the contracts menu after contract deployment was done. I had to watch it manually to be able to see it in the contracts menu.
...
0
votes
1answer
104 views
The contract code couldn't be stored when deploying to rinkeby
I was finally able to get some ether funded and geth/mist working and now i am getting the following error when attempting to deploy my contracts to the rinkeby test network. My project is based on ...
1
vote
0answers
104 views
Gas requirement of contract deployment
I've recently been running into issues with contract deployment (receiving "Error: VM Exception while processing transaction: out of gas" during migration). It's been my understanding that the ...
1
vote
2answers
103 views
Returning dynamic arrays: out of gas
I'm trying to return a dynamic array of structures from a Solidity function to a client. Since I need to build the result, I'm declaring a storage variable and add elements to it:
function ...
2
votes
1answer
115 views
Unable to deploy contract that uses Oraclize. Out of gas
I'm trying to deploy a smart contract that uses Oraclize on the Ropsten TestNet using truffle. It seems that deploy the Oraclize api contract (imported by my contract) it's too costly and causes the ...
0
votes
2answers
970 views
“The transaction execution will likely fail. Do you want to force sending? VM Exception while processing transaction: out of gas”
When I want to deploy a contract using testRPC and remix, I receive the following error message:
Gas estimation errored with the following message (see below). The
transaction execution will ...
1
vote
2answers
76 views
Analize gas usage and contract design
Suppose that I've the following contract code:
pragma solidity ^0.4.23;
contract pensCollection{
struct Pen{
uint productCode;
address ownerAddress;
}
address public ...
0
votes
1answer
56 views
Reverted tx on Ropsten but gas limit not reached
This is a timed crowed sale contract
https://ropsten.etherscan.io/tx/0xaa3fa69a32060ad578cb9bc2a94fcc4cf7109f4e743f54c527c18f764f634ebb
Error encountered, bailing. Network state unknown. Review ...
0
votes
0answers
33 views
How do i get to return value form one smart contract function into another smart contract on private ethereum network?
Here it is my called function.
pragma solidity ^0.4.19;
contract Called{
string public name;
function set(string _var) {
name = _var;
}
function get() view returns (...
0
votes
2answers
118 views
mapping with struct array, gas or performance issue?
I have a question regarding iterating a mapping with struct array. There is a for loop that iterates over a few thousands times trying to find a matching properties inside the struct.
Ex:
struct ...
0
votes
0answers
83 views
why this simple function cause out of gas error on TestRPC?
thanks for any suggestions.
function withdraw() public {
if(votes[msg.sender].voteRound == curRound){
numTotalVotes = numTotalVotes - votes[msg.sender].numVotes;
numVoteAddrs--;
...
2
votes
0answers
174 views
delegatecall on library always run out of gas
I'm trying to replicate the Dynamic Library attack of this paper under a recent version of solidity and the EVM.
Streamlining down the code, I've created this very simple contract (which is, in ...
1
vote
1answer
225 views
Calling external contract leads to infinite gas need
I'm trying to implement this pattern:
contract Producer {
uint8 public SOME_VALUE=12;
}
contract Consumer {
Producter currentProducer;
function setProducer(address addr) { currentProducer = ...
5
votes
1answer
413 views
Transaction out of gas but gas used less than gas limit
I have this method on a contract that I'm testing on rinkeby
function addMatch(string _name, uint _fixtureId, uint8 _home, uint8 away, uint _start) public onlyOwner returns (uint8) {
require(...
0
votes
1answer
324 views
How to fill a big array of structs
I'm quite new to Solidity and want to fill an array with 240 structs.
I have a struct:
struct Country {
string name;
uint level;
uint attackPower;
uint defensePower;
...
0
votes
1answer
151 views
Out of gas transaction is included in the blockchain even if it is reversed?
In my private testnet, I sent a transaction that runs out of gas before completion, which can be seen from gasUsed: 28666 = gas: 28666 and failure status: "0x0",. I thought it would not be ...
0
votes
1answer
82 views
Is it possible to run out of gas in a method before reaching the self-destruct call?
I'd like to implement a self-destruct method for a smart contract that pools money from people as a last resort.
Before calling self-destruct, I'd like to refund all the money to the users and send ...
1
vote
2answers
1k views
vm exception while processing transaction : out of gas
I already read the other topics with the same error, but that didn't solve my problem ...
When I try to communicate with test rpc between my web interface with my smart contract I have always error "...
1
vote
1answer
458 views
Transaction failed due to “out of gas”
I sent Ether to a contract but the transaction failed due to "out of gas".
How do I complete the transaction I am trying to make? I sent the ether from my NanoS wallet to the XYO contract.
0
votes
1answer
889 views
how to solve VM Exception while processing transaction: out of gas
i am trying to call this function with help of web3.js in ganache testrpc but it is giving me error of VM Exception while processing transaction: out of gas
i have tried to increas gas of ganache to ...
1
vote
0answers
176 views
Showing “We couldn't estimate the gas” error in estimated fee consumption field while executing a contract in ethereum wallet
i don't know what is the problem sins it is my first time. and i just took and test just how it works but then it say that “We couldn't estimate the gas” error so i don't know what is the problem is. ...
