I ran into another issue like the one fixed by r1318, so update all of `tests/mini/norun_debug*` to hopefully keep crashing using the same trick.

module union1;

union U
{
    float f;
    int i;
}

void main()
{
    float f = 2;
    U u = U(f);
    assert(u.i == *cast(int*)&f);
}