From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ludovic =?UTF-8?Q?Court=C3=A8s?= <ludo@gnu.org>
Subject: bug#30785: Man pages truncated, repeated
Date: Mon, 14 Jan 2019 17:10:23 +0100
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To: Pierre Neidhardt <mail@ambrevar.xyz>
Cc: 30785@debbugs.gnu.org

Pierre Neidhardt <mail@ambrevar.xyz> skribis:

>> https://sourceware.org/gdb/onlinedocs/gdb/Forks.html
>>=20
>> this might help here.
>
> Thanks G=C3=A1bor.
> So I tried the following in gdb:
>
>> set follow-for-mode child
>> set detach-on-fork off
>> run emacs
> [inferior 2 completes]
>> inferior 1
> [inferior 3 completes]
>> inferior 1
> [inferior 4 completes]
>> inferior 1
> [inferior 5 hangs]
>
> GDB seems to be stuck on the 5th inferior.  Maybe this is not so reliable.

Maybe it=E2=80=99s just that the inferior is still running, no?

>> Can we trigger the segfault without libpipeline?
>
> "preconv" by itself seems to work perfectly.  It even works in man if it'=
s in
> the PATH.  It only breaks from libpipeline.

What about reproducing the segfault and getting a core dump?  Roughly
you can do:

  ulimit -c unlimited
  man whatever that causes the crash
  gdb /path/to/preconv core

HTH!

Ludo=E2=80=99.