From: Andres Salomon <dilinger@...>
Date: 2004-09-28T11:24:12+09:00
Subject: Re: segfaulting in IO.popen()

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On Tue, 2004-09-28 at 08:42 +0900, Yukihiro Matsumoto wrote:
> Hi,
>=20
> In message "Re: segfaulting in IO.popen()"
>     on Tue, 28 Sep 2004 05:07:18 +0900, Andres Salomon <dilinger@voxel.ne=
t> writes:
>=20
> |I'm having a problem w/ mod_xmlrpc segfaulting inside a call to
> |IO.popen.  The code snippet that's being run is:
> |
> |cmd =3D 'sudo ' + PRIV + ' /usr/bin/apt-get -u --trivial-only dist-upgra=
de'
> |skip =3D 2
> |
> |f =3D IO.popen(cmd)
> |output =3D f.readlines
>=20
> Can you show us error reproducing script and how to run it?  Code
> snippet is not enough to detect bugs.  Do I have to compile
>=20

Unfortunately, I can't reproduce it with an individual script; I need
all the scripts together (this bug has been incredibly frustrating to
narrow down).   I actually managed to make the bug go away by wrapping
dbi, openssl, and ipaddr requires w/ GC.disable/GC.enable (ie,=20
GC.disable
require 'ipaddr'
GC.enable).




> |http://www.acm.rpi.edu/~dilinger/modxmlrpc-snap.tar.gz
>=20
> to get an error?
>=20

Yes; the dependencies are kind of specific (apache2, xmlrpc-c, cmake..).
If you use debian, I can prepare packages for you (libapache2-mod-
xmlrpc2 is already in debian testing/unstable, but it's an older version
that doesn't have ruby support).

I'll try to narrow this down as much as possible, as I realize I'm not
giving you much to work w/; unfortunately, I've seen variations of this
bug (I think) before, and it's been randomly appearing/disappearing for
months.


--=20
Andres Salomon <dilinger@voxel.net>

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