Bug#174040: qmail can't run after update to 2.3.1-6

[sand@celia.serv.net]

I can't.  I don't have any special privileges, I just discovered and
investigated this independently.  I've noticed a new bug #174040 that
refers to several packages that break with Libc 2.3.1-6, but checking
more closely, two refer to QMail again and one is someone's personal
code.  We still can't rule out ISO C violations in the applications.

Derek

Petr Balá¹ writes:
> O.K. Can you add conflict with qmail version <= 1.03-24 please?
> 
> Petr Balas
> 
> 
> Dne po 23. of December 2002 06:45 sand@celia.serv.net napsal(a):
> > This looks like a issue with all of Dan Bernstein's software.  I've
> > just seen a similar bug with his "supervise" program in "daemontools"
> > (taking down "qmail" and "djbdns", ouch).
> >
> > The bug appears to be triggered by a change of representation for the
> > "errno" variable in the guts of libc6 (from "extern int" to a macro
> > around a function call).  When I compile "qmail" against 2.3.1-6 dev,
> > it complains about not finding "errno".
> >
> > According to the glibc Info file:
> >
> >    ``ISO C specifies `errno' as a "modifiable lvalue" rather than as a
> >    variable, permitting it to be implemented as a macro.''
> >
> > But DJB's code declares it as "extern int errno;" in one of its own
> > error files (and doesn't include "<errno.h>", which could macro expand
> > the problem away).  So this doesn't seem to be libc's fault.
> >
> > I'm going to inform Gerrit Pape (maintainer for the unofficial
> > pre-compiled DJB .debs) of the problem; I think he'll have to forward
> > it upstream as well.
> >
> > Derek
> >
> > Petr Balas writes:
> > > Package: libc6
> > > Version: 2.3.1-6
> > >
> > > After installing latest libc6 qmail failed to start with "alert: cannot
> > > start: unable to read controls".
> > > strace qmail-smtpd suggest this is missing configuration file:
> > >
> > > open("control/percenthack", O_RDONLY|O_NONBLOCK) = -1 ENOENT (No such
> > > file or directory)
> > > write(0, "alert: cannot start: unable to r"..., 45alert: cannot start:
> > > unable to read controls
> > > ) = 45
> > > _exit(111)                              = ?
> > >
> > > but this configfile is optional and after downgrading libc6 + locales
> > > to 2.3.1-5 all works O.K. Wery strange.
> > > Maybe there is some memory corruption in new libc.
> > >
> > > --
> > > Petr Balas (petr at balas dot cz)
> 
> -- 
> Petr Balas (petr at balas dot cz)
> 
>