MerlinEgalite

pragma solidity >=0.8.0;

import "forge-std/Test.sol";
import "forge-std/console2.sol";


contract ContractA {
	function destroy() public {
		selfdestruct(payable(0));
	}

metachris

Notes on running mev-boost relay + builder in devnets

Running mev-boost-relay

• https://github.com/flashbots/mev-boost-relay (extensive documentation in the README)
• https://flashbots.notion.site/Running-mev-boost-relay-at-scale-draft-4040ccd5186c425d9a860cbb29bbfe09

---

Builder + mev-flood

devtooligan

// @author original POC by @z0age


library pureConsole {

    /*********************
     * string + uint256
     ********************/

    function log(string memory errorMessage, uint256 value) internal pure {

0xalpharush

Do you write smart contracts? Want them to be safe and efficient? Read on!

The state of smart contract languages could historically be categorized as lacking constructs that drive programmers to write safe code and being inefficient due to poor optimizations. Oftentimes, programmers write lower level code riddled with footguns in pursuit of gas savings. What if safety and efficiency weren’t at odds?

Here’s how we can eliminate an entire class of bugs without spending an exorbitant amount of gas on safety checks thanks to EIP-1153!

For example, take the following smart contract (Figure 1) which exhibits “read-only reentrancy”. Currently, nothing prevents the following call sequence from succeeding despite there being ambiguity about what value will be returned by DataRace.price during call sequence, X.

Callstack [DataRace.withdraw, msg.sender, X, token.transfer]

kalaspuff

Validating Ledger signatures relayed via MetaMask

Find the full article at https://mirror.xyz/coa.eth/mvPbLPXvy375CXi1_XwMTzG84lwlSKYUBHDx_R1TIgU, which includes some additional context, descriptions of symptoms, etc.

"Ledger devices produces vrs signatures with a canonical {v} value of 0 or 1."

This write-up goes through some brief details on vrs signatures, what makes signature validation fail on some web apps when signing using a Ledger device connected through MetaMask extension, followed by what to do about it.

- "I'm in hurry and just want things to work."
- "Reasonable. Scroll down some for the fix. It's just four rows of JS + comments."

denguir

How to install CUDA / cuDNN / TensorRT on Ubuntu

Install NVIDIA drivers

Update & upgrade

sudo apt update && sudo apt upgrade

Remove previous NVIDIA installation

hrkrshnn

Compile solc locally after applying the below patch (solc.patch).Build instructions.

./solc example.sol --model-checker-engine bmc

Call to check. Solver state:
(declare-datatypes ((bytes_tuple 0)) (((bytes_tuple (bytes_tuple_accessor_array (Array Int Int)) (bytes_tuple_accessor_length Int)))))
(declare-datatypes ((tx_type 0)) (((tx_type (block.basefee Int) (block.chainid Int) (block.coinbase Int) (block.difficulty Int) (block.gaslimit Int) (block.number Int) (block.timestamp Int) (blockhash (Array Int Int)) (msg.data bytes_tuple) (msg.sender Int) (msg.sig Int) (msg.value Int) (tx.gasprice Int) (tx.origin Int)))))

cleanunicorn

#!/bin/bash

echo "Searching for node_modules directories..."

find . -type d -name "node_modules" -prune -exec echo "Removing {}" \; -exec rm -rf {} \;

echo "All node_modules directories have been removed."

devtooligan

#!/bin/bash

alias c='code .'
alias cdh='cd $HOME'
alias ls='ls -la'
alias sl="ls"
alias cls='clear'
alias g='git status'
alias gap='git add -p'
alias gl='git log'

DanielVF

pragma solidity >=0.8.17;

// Cursed ERC20 that does everything in events.
// by @danielvf, based solmate by @transmissions11

abstract contract ERC20 {
    event Transfer(address indexed from, address indexed to, uint256 amount);
    event Approval(address indexed owner, address indexed spender, uint256 amount);

    string public name;