On Tue, 2002-07-16 at 21:14, Branko Čibej wrote: > Strictly speaking, Ulrich's patch is better, because there's no > guarantee that "errno" is a simple global variable. It could be > translated into a function call, for all you know -- depends on the > platform, linc implementation, threading support, etc. etc. So making a > copy makes sense.
So it's a function call. So what? It still returns a single stable value. If you're worried about speed, that's ridiculous. This is an error case; a few cycles here or there isn't going to matter. (And it's not like errno is ever a slow function call, when it's a function call.)
