[fpc-pascal] Trash variables (-gt) - Translation

[LacaK]

Hi *,
I am translating "Trash variables" (from English to Slovak), but I can 
not find appropriate words.
That's why I want to describe it in more words.
Is this correct: "Initialize local variables with random values" ? Or 
better suggestion?
Thanks
-Laco.

https://www.freepascal.org/docs-html/user/userap1.html:
-gt        Trash local variables (to detect uninitialized uses; multiple 
't' changes the trashing value)