Date: Mon, 9 Oct 2000 12:10:33 +0300 (EET DST) From: jau@iki.fi (Jukka A. Ukkonen) To: hackers@freebsd.org Cc: christos@zoulas.com Subject: tcsh went nuts with FreeBSD-3.5.1 (installed from source code) Message-ID: <200010090910.MAA23987@cs94004.pp.htv.fi>
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Howdy, all! I am sending this to hackers@freebsd.org, but I am sending a CC to Christos Zoulas, because what I have noticed has an undesired effect on tcsh, though apparently this is mostly related to libc sources from FreeBSD 3.5.1 release. I have seen something very odd happening with tcsh 6.09.00 and FreeBSD 3.5.1. Tcsh binary stopped working quite suddenly when I installed reeBSD-3.5.1 from source code. It seems to get stuck within sigpause() and never comes back among the living again. When this happens ps shows me this 18318 p0 S 0:00.04 -/tcsh 18319 p0 Z+ 0:00.00 (stty) So, apparently SIGCHLD does not get through to the shell. For all I can tell it seems tcsh should be waiting for one in pjwait() in source file sh.proc.c. Re-compiling tcsh static or dynamic makes no difference, if libc is compiled from 3.5.1 sources. I didn't think the two FreeBSD versions should have so different libraries, but it seems to be the case. If I use the old 3.4 libc, tcsh is just fine also with FreeBSD-3.5.1 kernel quite independent of whether I compile libc locally or not. When I try with the locally compiled 3.5.1 libc, it makes no difference whether the kernel is 3.5.1 or 3.4. With either kernel tcsh gets stuck. Do you have any idea what might be going on? Has FreeBSD changed the implementation of sigpause() et al. somehow such that the new versions somehow conflict with the old version? Or is this some sort of glitch in tcsh signals management? Quite frankly I assume the problem is only present in the libc sources of the 3.5.1 distribution. The problem does not seem to be present in the binary version of libc which is distributed as part of the 3.5.1 package. Has anyone else noticed similar odd problems? Does anyone out there have good suggestions about what to try next? Fixed 3.5.1 libc source code maybe? Cheers, // jau .--- ..- -.- -.- .- .- .-.-.- ..- -.- -.- --- -. . -. / Jukka A. Ukkonen, SysOpen Plc, Finland /__ M.Sc. (sw-eng & cs) (Phone) +358-424-2020-331 / Internet: Jukka.Ukkonen@SysOpen.Fi (Fax) +358-424-2020-700 / Internet: ukkonen@nic.funet.fi (Mobile) +358-400-606-671 v Internet: jau@iki.fi (Home&Fax) +358-9-6215-280 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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