**Full source code of the file 'Test.sol' :**

```
pragma solidity ^0.4.23;

contract Mortal{

    address owner;

    string ownerInfo = "Contract Owner name XYZ";

    constructor () public {
        owner = msg.sender;
    }

    function kill () public {
        if (msg.sender == owner) {
            selfdestruct(owner);
        }
    }

    function ownerInfo() public view returns (string) {
        return ownerInfo;
    }

}

contract Test is Mortal {

    string message = "Hello World!";

    constructor () public {
    }

    function getMessage() public view returns (string){
        return message;
    }
}

```

**Compiler Error:**

```
myMac:solidity admin$ solc Test.sol
Test.sol:21:2: Error: Identifier already declared.
    function ownerInfo() public view returns (string) {
 ^ (Relevant source part starts here and spans across multiple lines).
Test.sol:9:2: The previous declaration is here:
    string ownerInfo = "Contract Owner name XYZ";
    ^------------------------------------------^

```

I don't see any *duplicate* declaration of `ownerInfo`. Any idea, why am I getting this error?