[fargle]

Well, OK, but that isn't fair to say "C" or strcpy(). That's the implementation - so is it surprising that the common underlying implementation of "C" can be coerced into indeterminate or even Turing complete behavior?

It's fair to say that C allows unsafe calls. It's useless to point out that undefined-behavior and unsafe calls could result in Turing completeness. Strcpy() is not Turing complete - it doesn't automatically detect and protect against unsafe usages. That are evil.