solidity/test/libsolidity/semanticTests/array/byte_array_transitional_2.sol

// Tests transition between short and long encoding both ways
contract c {
    bytes data;

    function test() public returns (uint256) {
        for (uint8 i = 0; i < 33; i++) {
            data.push(bytes1(i));
        }
        for (uint8 i = 0; i < data.length; i++)
            if (data[i] != bytes1(i)) return i;
        data.pop();
        data.pop();
        for (uint8 i = 0; i < data.length; i++)
            if (data[i] != bytes1(i)) return i;
        return 0;
    }
}
// ====
// compileViaYul: also
// ----
// test() -> 0
// gas irOptimized: 309167
// gas legacy: 483915
// gas legacyOptimized: 478672