Bug#1110346: hurd: file overlaps with 'gdb'

[Martin-Éric Racine <martin-eric.racine@iki.fi>]

ma 4.8.2025 klo 12.10 Samuel Thibault (sthibault@debian.org) kirjoitti:
>
> Martin-Éric Racine, le lun. 04 août 2025 12:08:26 +0300, a ecrit:
> > ma 4.8.2025 klo 12.01 Martin-Éric Racine (martin-eric.racine@iki.fi) kirjoitti:
> > >
> > > ma 4.8.2025 klo 11.45 Samuel Thibault (sthibault@debian.org) kirjoitti:
> > > >
> > > > Martin-Éric Racine, le lun. 04 août 2025 08:02:16 +0300, a ecrit:
> > > > > su 3.8.2025 klo 22.33 Samuel Thibault (sthibault@debian.org) kirjoitti:
> > > > > > Martin-Éric Racine, le dim. 03 août 2025 17:51:36 +0300, a ecrit:
> > > > > > > Preparing to unpack .../gdb_16.3-1_hurd-i386.deb ...
> > > > > > > Unpacking gdb (16.3-1) ...
> > > > > > > dpkg: error processing archive /var/cache/apt/archives/gdb_16.3-1_hurd-i386.deb (--unpack):
> > > > > > >  trying to overwrite '/usr/bin/gcore', which is also in package hurd (1:0.9.git20250801-1)
> > > > > >
> > > > > > I can't reproduce this, because gcore is, as expected, diverted by the
> > > > > > hurd package:
> > > > > >
> > > > > > # grep -A 2 gcore$ /var/lib/dpkg/diversions
> > > > > > /usr/bin/gcore
> > > > > > /usr/bin/gcore-gdb
> > > > > > hurd
> > > > >
> > > > > It is not. The above returns empty.
> > > >
> > > > I guess somehow it got dropped on your system, and reinstalling the hurd
> > > > package won't help since we are supposed to add the diversion on
> > > > installation only, to let the admin change the configuration. You can
> > > > restore the diversion with:
> > > >
> > > > dpkg-divert --package hurd --add --rename --divert /usr/bin/gcore-gdb /usr/bin/gcore
> > >
> > > I wonder if this, and the previous stdout/stderr linking problem I
> > > previosuly reported might be the result of using crosshurd for the
> > > install.
> > >
> > > Anyhow, it might be a good idea to redo those equivs and links in
> > > maintainer scripts, if found in an unexpected state, upon upgrade.
> >
> > Sure enough, that also partially fails:
> >
> > $ sudo dpkg-divert --package hurd --add --rename  --divert
> > /usr/bin/gcore-gdb /usr/bin/gcore
> > Adding 'diversion of /usr/bin/gcore to /usr/bin/gcore-gdb by hurd'
> > Ignoring request to rename file '/usr/bin/gcore' owned by diverting
> > package 'hurd'
>
> That's not a failure, it's just telling you that it's not renaming its
> own file.

Once that diversion was manually added, gdb indeed installed. Thanks!

However, none of my usual Linux settings work on Hurd:

$ cat .gdbinit
     set debuginfod enabled on
echo ################################\nhandle SIG33 pass nostop noprint\n
     handle SIG33 pass nostop noprint
echo ##################\nset pagination off\n
     set pagination off
echo ##############\nbacktrace full\n
     backtrace full
#echo ##############\ninfo registers\n
     info registers
echo ###############################\nthread apply all backtrace full\n
     thread apply all backtrace full
echo #########\nx/16i $pc\n
     x/16i $pc
echo ##########################\nthread apply all backtrace\n
     thread apply all backtrace

I'm guessing that there are more useful equivalents to the above for
Hurd, but I wouldn't know which ones.

Martin-Éric