chris@mimsy.UUCP (Chris Torek) (04/03/88)
>>... Calls to external functions can be treated atomically, as "black >>boxes" -- but there's no rule that says they *have* to be. In article <3850011@hpfclq.HP.COM> mike@hpfclq.HP.COM (Mike McNelly) writes: >... True, the compiler can certainly understand the semantics of a >routine such as printf() .... However, there's no guarantee that the >programmer doesn't have his own version of these routines ... [unless] >you reserve these names as part of the language .... The draft ANSI standard for C does reserve those names as part of the language. One reason is just so that compilers *can* do this sort of optimisation. -- In-Real-Life: Chris Torek, Univ of MD Comp Sci Dept (+1 301 454 7163) Domain: chris@mimsy.umd.edu Path: uunet!mimsy!chris