Looks like what I've been looking for--a ready-made parser for C that's made for exposing the structure of the source code for analysis

Very interesting. Ostensibly, Google is building a language-and-IDE-independent programmer tool that IDEs can use to provide completion info and documentation. Yegge doesn't imply that there is a staggering potential for syntax-aware metaprogramming, statistics collection and automated bug finding—he doesn't have to.