Paul Eggert wrote: >So my question is: Is it a burden on GCC to require interpretation (B)? > >My understanding is that GCC already uses (B), and that the answer is >"no, it's no problem", but if I'm wrong please let me know.
GCC doesn't use (A), (B) or (C). GCC doesn't conform to C99 and any implementation of "c99" that uses GCC would presumably also be non-conforming. Ross Ridge