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Re:Echo – Assembly program that prints the first positional ... by userbinator on Monday January 02, 2017 @09:19AM (#13301240)
...which I think is a far superior system to errno. I commented on this before somewhat recently: https://news.ycombinator.com/item?id=13062421

In fact, it's puzzling to me why the errno mechanism was even conceived, as it seems to offer no advantages over returning errors directly (does anyone happen to know?)

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