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From: Paul DuBois <dubois@primate.wisc.edu>
Message-Id: <199609201858.NAA00906@night.primate.wisc.edu>
Subject: Re: libc_r bug
To: hsu@freefall.freebsd.org (Jeffrey Hsu)
Date: Fri, 20 Sep 1996 13:58:20 -0500 (CDT)
Cc: hackers@freefall.freebsd.org
In-Reply-To: <199609200828.BAA01366@freefall.freebsd.org> from "Jeffrey Hsu" at Sep 20, 96 01:28:29 am
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>The following program exhibits a bug in the latest version of libc_r.
>If the two lines are reversed, then everything's okay.
>
>main()
>{
>  write(1, "hi", 2);
>  printf("hello world\n");
>}


What happens, and what do you expect to happen?

You're mixing stdio (buffered) and non-stdio (unbuffered) I/O.
Unpredictable results will often ensue.