my glaaaasses

Source

// SPDX-License-Identifier: UNLICENSED
pragma solidity 0.8.35;

/* ===ARENA-MANIFEST===
{
  "deploy": {
    "contract": "C",
    "args": [],
    "value": 0
  },
  "entry": {
    "function": "run",
    "args": [],
    "value": 0
  },
  "feature": "storage-dynamic-bytes-tuple-swap",
  "note": "solc 0.8.35 stores tuple components right-to-left; storage references are not payload snapshots, but solidity-lean models this as a true swap"
}
===END-ARENA-MANIFEST=== */

contract C {
    bytes internal a;
    bytes internal b;

    function run() external returns (uint256) {
        a = hex"01";
        b = hex"0203";
        (a, b) = (b, a);
        return a.length;
    }
}