Referenced parameters not showing as referenced

[quanyang]

Should there be a way to tell if the argument was referenced?

Example:

<?php
function doNothing(&$var) {
$var = 'a';
}
$first = '1';
doNothing($first);
?>

Output

Block#1
    Stmt_Function<doNothing>
    Expr_Assign
        var: Var#1<$first>
        expr: LITERAL('1')
        result: Var#2
    Expr_FuncCall
        name: LITERAL('doNothing')
        args[0]: Var#1<$first>
        result: Var#3
    Terminal_Return
        expr: LITERAL(1)

Function doNothing():
Block#1
    Expr_Param
        name: LITERAL('var')
        result: Var#1<$var>
    Expr_Assign
        var: Var#2<$var>
        expr: LITERAL('a')
        result: Var#3
    Terminal_Return
        expr: LITERAL(NULL)