uopz_set_static() may break references

[cmb69]

Consider the following code:

function &foo() {
    static $a = 1;
    return $a;
}

$a = &foo();
// uopz_set_static("foo", ["a" => 3]); // outputs 3 when uncommented
$a = 2;
var_dump(foo()); // outputs 2

The behavior is unexpected; I'd call it outright wrong. I'm not sure, though, if fixing the issue might cause more harm (due to breaking BC) then good.

Any thoughts on this?