I am currently programming a server. So I got the idea that after
I've generated all the hashes I need from a password, I want to
erase it from RAM before discarding it, just to be sure it won't
float around if the server memory is exposed to spyware by some
buffer overflow. Is this wise caution, or just being too paranoid?
And if it is worthwhile, do I have to do this:
```
foreach(ref part; cast(ubyte[]) rootPassword)
volatileStore(&part, 0);
```
Or, can I rely on that the compiler won't optimize this out?
```
rootPassword[] = '\0'
```
`rootPassword` is allocated on the heap, but only locally
referred to.
