bug#55832: 28.1; Emacs crashes when using tramp from helm in emacs-29

[Thierry Volpiatto]

Eli Zaretskii <eliz@gnu.org> writes:

>> From: Thierry Volpiatto <thievol@posteo.net>
>> Date: Tue, 07 Jun 2022 15:16:36 +0000
>> 
>> 
>> I can't reproduce from emacs -Q using M-x find-file, but the bug happens
>> with Helm when using M-x helm-find-files /sudo::
>> Emacs freeze and then in gdb:
>> 
>>     Thread 1 "emacs" received signal SIGSEGV, Segmentation fault.
>>     0x0000555555837be7 in doprnt.part ()
>> 
>> In all previous emacs this worked normally, working fine here in
>> emacs-28.1.
>> This is a followup of bug #55555.
>> 
>> I can send more infos from gdb if you give me instructions, I tried bt
>> but the output is huge.
>
> The first step is to figure out what was the immediate reason for the
> segfault, and in which source line it happened.
>
> Your build is heavily optimized, so I suggest to rebuild with the
> following additional compiler options:
>
>    -gdwarf-4 -g3

Can't reproduce the crash after rebuilding with these flags.

-- 
Thierry

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