http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58887
--- Comment #3 from joseph at codesourcery dot com <joseph at codesourcery dot com> --- We take the view that the preprocessor is deliberately meant to be limited and overly complicated features in it would be contrary to the spirit of C. Of course if they are introduced in the standard we need to implement them, but otherwise this proposed feature seems inappropriate.
