Possibly this is why it wasn't mentioned? There are enough differences in that list that I can't imagine any existing C library would compile unchanged.
After using cc<< for non-trivial programs, it's about as quirky as the Plan 9 C compiler, the lack of multi-dimensional arrays is the one thing that trips me up the most with cc<<
After using cc<< for non-trivial programs, it's about as quirky as the Plan 9 C compiler, the lack of multi-dimensional arrays is the one thing that trips me up the most with cc<<