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Re: [Chicken-hackers] [PATCH] drop ##sys#file-info


From: John Cowan
Subject: Re: [Chicken-hackers] [PATCH] drop ##sys#file-info
Date: Mon, 3 Oct 2011 11:23:07 -0400
User-agent: Mutt/1.5.18 (2008-05-17)

Alan Post scripsit:

> errno is only set when a syscall returns -1/signals an error.  If
> you call stat and it succeeds, errno wasn't touched by stat, and
> has whatever value it did before stat was called.

More precisely, its value is undefined.  In any case, you're right
to say that checking errno is always the Wrong Thing after success.

-- 
I don't know half of you half as well           John Cowan
as I should like, and I like less than half     address@hidden
of you half as well as you deserve.             http://www.ccil.org/~cowan
        --Bilbo



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