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Re: guile under gdb crashing on Unbuntu 22.04

From: Matt Wette
Subject: Re: guile under gdb crashing on Unbuntu 22.04
Date: Thu, 5 May 2022 12:22:58 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.8.1

I suspect this is not related to whether guile support is compiled into gdb.

The next step is to get the libgc debug info, to track within that package.
I may do it.  If someone wants to take a stab here is info on getting the
debug packages:

On 5/5/22 11:48 AM, Daniel Tornabene wrote:
so, I don't know off the top of my head how Ubuntu does their GDB
packaging, but Debian does not package GDB with guile support enabled, you
have to recompile GDB with the configuration option --with-guile and have
either 2.2.x or 3 installed, along with the appropriate dev packages.  I'd
be willing to bet that this is something to do with that.  Maybe check your
pkg-config options and see what guile is linked with?

On Thu, May 5, 2022 at 10:48 AM Aleix Conchillo Flaqué <>

I'm also on UBuntu 22.04 and happens the same with guile 3.0.7 that comes
with it:

(gdb) run
Starting program: /usr/bin/guile
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/".

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff7be58f2 in GC_find_limit_with_bound () from
(gdb) bt
#0  0x00007ffff7be58f2 in GC_find_limit_with_bound () from
#1  0x00007ffff7be59da in GC_init_linux_data_start () from
#2  0x00007ffff7be6f67 in GC_init () from /lib/x86_64-linux-gnu/
#3  0x00007ffff7eb6c8e in ?? () from
#4  0x00007ffff7f1a90f in ?? () from
#5  0x00007ffff7f1acde in ?? () from
#6  0x00007ffff7be580b in GC_call_with_stack_base () from
#7  0x00007ffff7f15dbc in scm_with_guile () from
#8  0x00007ffff7eb6bd9 in scm_boot_guile () from
#9  0x0000555555555193 in ?? ()
#10 0x00007ffff7c63d90 in ?? () from /lib/x86_64-linux-gnu/
#11 0x00007ffff7c63e40 in __libc_start_main () from
#12 0x0000555555555225 in ?? ()

On Thu, May 5, 2022 at 5:48 AM Matt Wette <> wrote:

Hi All,

I have no clue what is going on here but wondering if others are seeing
I recently installed Ubuntu 22.04, then recompiled guile-3.0.8.
It crashes running withing gdb, runs fine otherwise:

$ meta/gdb-uninstalled-guile
GNU gdb (Ubuntu 12.0.90-0ubuntu1) 12.0.90
Copyright (C) 2022 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
Find the GDB manual and other documentation resources online at:

For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from
(gdb) run
Starting program:
[Thread debugging using libthread_db enabled]
Using host libthread_db library
Program received signal SIGSEGV, Segmentation fault.
0x00007ffff7bdd8f2 in GC_find_limit_with_bound () from
(gdb) info stack
#0  0x00007ffff7bdd8f2 in GC_find_limit_with_bound ()
     from /lib/x86_64-linux-gnu/
#1  0x00007ffff7bdd9da in GC_init_linux_data_start ()
     from /lib/x86_64-linux-gnu/
#2  0x00007ffff7bdef67 in GC_init () from
#3  0x00007ffff7eda391 in scm_storage_prehistory ()
      at ../../guile-3.0.8-dist/libguile/gc.c:465
#4  scm_i_init_guile (base=0x7fffffffde30)
      at ../../guile-3.0.8-dist/libguile/init.c:360
#5  0x00007ffff7f41eff in scm_i_init_guile (base=0x7fffffffde30)
      at ../../guile-3.0.8-dist/libguile/init.c:357
#6  scm_i_init_thread_for_guile (base=base@entry=0x7fffffffde30,
      at ../../guile-3.0.8-dist/libguile/threads.c:570
#7  0x00007ffff7f4231e in scm_i_init_thread_for_guile (dynamic_state=0x0,
      base=0x7fffffffde30) at
#8  with_guile (base=0x7fffffffde30, data=0x7fffffffde60)
      at ../../guile-3.0.8-dist/libguile/threads.c:638
#9  0x00007ffff7bdd80b in GC_call_with_stack_base ()
     from /lib/x86_64-linux-gnu/
#10 0x00007ffff7f3d3dc in scm_i_with_guile (dynamic_state=<optimized
      data=<optimized out>, func=<optimized out>)
--Type <RET> for more, q to quit, c to continue without paging--
      at ../../guile-3.0.8-dist/libguile/threads.c:688
#11 scm_with_guile (func=<optimized out>, data=<optimized out>)
      at ../../guile-3.0.8-dist/libguile/threads.c:694
#12 0x00007ffff7eda2c9 in scm_boot_guile (argc=argc@entry=1,
      main_func=main_func@entry=0x555555555320 <inner_main>,
      closure=closure@entry=0x0) at
#13 0x00005555555551af in main (argc=1, argv=0x7fffffffe018)
      at ../../guile-3.0.8-dist/libguile/guile.c:94

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