Keyword promotion warnings for Solidity identifiers

// main.sol
pragma solidity ^0.8.37;

// This contract demonstrates the new keyword‑promotion warnings.
// The compiler will warn about the identifiers `error`, `layout`, and `super`.
// The warnings do not affect compilation or execution.
contract KeywordPromotionDemo {
    // Warning: identifier 'error' may be promoted to a keyword
    uint256 public error;

    // Warning: identifier 'layout' may be promoted to a keyword
    string public layout;

    // Warning: identifier 'super' may be promoted to a keyword
    function super() public pure returns (string memory) {
        return "super function";
    }
}

Tests

// test.sol
pragma solidity ^0.8.37;
import "./main.sol";

contract KeywordPromotionDemoTest {
    KeywordPromotionDemo demo;

    constructor() {
        demo = new KeywordPromotionDemo();
    }

    function test_errorVariable() public view {
        require(demo.error() == 0, "error variable not zero");
    }

    function test_layoutVariable() public view {
        require(bytes(demo.layout()).length == 0, "layout variable not empty");
    }

    function test_superFunction() public view {
        require(
            keccak256(bytes(demo.super())) == keccak256(bytes("super function")),
            "super function returned wrong string"
        );
    }
}