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bug#63047: Can't load glib debug symbols in gdb
From: |
Andrew Tropin |
Subject: |
bug#63047: Can't load glib debug symbols in gdb |
Date: |
Wed, 13 Sep 2023 11:54:08 +0400 |
On 2023-04-25 08:38, Maxim Cournoyer wrote:
> Hi Andrew,
>
> Josselin Poiret via Bug reports for GNU Guix <bug-guix@gnu.org> writes:
>
>> Hi Andrew,
>>
>> Andrew Tropin <andrew@trop.in> writes:
>>
>>> I try to run emacs in gdb with debug symbols for some libs available, I
>>> succeed with gtk+, but it doesn't work for glib and glibc. It looks
>>> strange to me, but maybe I am doing something wrong.
>>>
>>> Reproducer:
>>>
>>> guix shell gdb emacs-next-pgtk glibc:debug gtk+:debug glib:debug \
>>> --with-debug-info=glibc --with-debug-info=glib --with-debug-info=gtk+ \
>>> --no-grafts -- gdb .emacs-30.0.50-real
>>
>> At least for glibc, the glibc that is linked against is the one in (gnu
>> packages commencement), which is hidden from the user. The one in (gnu
>> packages base), which you can refer to with "glibc" is different. You
>> can try to find the proper debug output by looking at `guix size` of
>> your store path, then finding out the deriver for glibc with `guix gc
>> --derivers` and finally looking at the .drv to find out what the debug
>> output should be.
>>
>> For glib, it might be similar, make sure that you're using exactly the
>> right store path for it.
>
> Perhaps try on the core-updates branch, where glibc no longer has its
> symbols stripped. Another thing that can cause the debug symbols to not
> be found is grafts, as described in #48907, so when debugging I'd
> recommend using --no-grafts for now.
Thank you for the tips.
For future readers: the core-updates merged, it should be fixed, however,
I didn't check if it works now.
Closing the issue, but feel free to reopen.
--
Best regards,
Andrew Tropin
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