How to print or check if a string is "\0" (null) terminated in the D programming language?

[BoQsc]

I have a feeling that some parts of my code contains unterminated 
strings and they do overflow into other string that is to be 
combined. I'd like to take a look at strings, analyse them 
manually and see if any of them end up terminated or not.

Please provide any relevant examples of how you do this.