One feature C has needed forever is a solution to replace va_args, which is a super ugly hack that is hard to optimize around. Dennis Ritchie asked for one, but it's not the kind of tinkering that earns points in WG14.

Another, much simpler, feature would be to actually define "asm" which is ubiquitous in C code, but according the current standard means nothing. Even if you defined most of it as implementation dependent, that would be an improvement and would allow for more reliable optimization.

#C #Clang #Cstandard #Cfeature