I have to disagree; for the case of parsers, we must go to enormous effort to program them in languages that make it difficult to parse them safely. Safe parsing in this case is pretty much just being buffer/array-safe, nothing really fancy. Pretty much the only extant language in which the simple act of parsing files is dangerous is C, or non-idiomatic C++ being used as "super C".

If you're writing security code, put down the damn C.

(I mean, my personal opinion is just flat-out put down the damn C anyhow; even non-"security code" has a way of turning into security-sensitive code when you're not looking. But certainly if you're writing security code.)