As I mentioned in my previous post, that rendition of add_nir() won't work with perl 5.10. If that's a concern, then just switch to the other rendition provided in that last post of mine.

In the meantime, I've gone digging into the Inline::CPP source, found the problem, and made out a bug report about the issue (which includes a fix). That bug report and fix can be found at http://rt.cpan.org//Ticket/Display.html?id=36421 . As I've mentioned there, I really don't know whether the fix I've provided is the correct one.

Cheers,
Rob