Shadowing issue with named returns

A.sol

pragma solidity 0.4.11;

contract A {
    uint foo = 50;
    
    /**
    * @dev Public getter of private `foo` field
    * @return Returns value of `foo`
    */
    function GetFoo() constant returns (uint foo) {
        return foo; // returns 0 not 50, because of shadowing
    }
}