Sure, I can think of plenty of ways it could arise via metaprogramming. I don't know if I would want such a warning enabled in my own template-heavy C++ code.

Sure, I can think of plenty of ways it could arise via metaprogramming. I don't know if I would want such a warning enabled in my own template-heavy C++ code. But it perhaps it could be useful for those following the NetBSD style. :-)