Date: Sun, 22 Feb 1998 22:44:52 +0100 From: Ollivier Robert <roberto@keltia.freenix.fr> To: hackers@FreeBSD.ORG Subject: Re: Signal 11 problem Message-ID: <19980222224452.A2190@keltia.freenix.fr> In-Reply-To: <Pine.BSF.3.96.980223040539.19496C-100000@pluto.cpe.ku.ac.th>; from Sunthiti Patchararungruang on Mon, Feb 23, 1998 at 04:12:05AM %2B0700 References: <199802221942.LAA08014@dingo.cdrom.com> <Pine.BSF.3.96.980223040539.19496C-100000@pluto.cpe.ku.ac.th>
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According to Sunthiti Patchararungruang:
> Sorry about my useless example. Here is the real problem. I cut it
> from wu-ftpd 2.4. All variables are proved to be correct. I use
^^^^^^^^^^^
Thanks for giving us the real clue. See below.
> FreeBSD2.2.5.
>
> sprintf(msg, "%.24s %d %s %d %s %c %s %c %c %s ftp %d %s\n",
^^
> ctime(&curtime),
> xfertime,
> remotehost,
> byte_count,
^^^^^^^^^^
Your problem is probably there and we tumbled on it a something like two
years ago :-) It is the "byte_count" thingy which is probably an "off_t"
(64 bits) but the sprintf format string want it as an int "%d".
That cause a difference in offsets between what it is in the stack and what
the sprintf function retrieve from it based on the format string.
Change your format string to show "%qd" (or better "%qu") and watch your
program run.
--
Ollivier ROBERT -=- FreeBSD: The Power to Serve! -=- roberto@keltia.freenix.fr
FreeBSD keltia.freenix.fr 3.0-CURRENT #1: Sun Feb 22 00:44:29 CET 1998
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