Howdy, all!
I am sending this to [EMAIL PROTECTED], 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
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