Not sure what to take away from this. __abstract works because GCC allows it as an alias to __abstract__, not because parsing the syntax is forgiving.

Abstractions do exist (disagreeing with the single other post in here) and they also exist in most flavours of assembly, because assembly itself is still an abstraction for machine code. A very thin one, sure, but assemblers will generally provide a fair amount of syntactic sugar on top, if you want to make use of it.

Protip: your functions should be padded with instructions that'll trap if you miss a return.