bug#36811: Guix fails to build with libgc 8.0.4

[Jonathan Brielmaier <jonathan.brielmaier@web.de>]

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Some days ago Guix failed to build on openSUSE Tumbleweed. Today I
started to investigate it.

Guix fails to build on Tumbleweed with `make -j4` or a greater thread
count (see guile_coredump_building_guix.log)

It doesn't fail to build with `make -j3` or less threads and when
building inside of `guix environment --pure guix`.

I then started to look around what could differ between Tumbleweed and
guix environment. My first assumption was kind of hit :)

Tumbleweed is built since some days with libgc 8.0.4 and Guix is still
on 7.6.6. In my home project[0] I have built now Guix (and Guile) with
libgc 7.6.4, the version Tumbleweed used before. Guix builds now with
`make -j4` and greater again on Tumbleweed...

So it seems that guile is not compatible with libgc 8.x yet? Is this
correct?

I wanted to update libgc in guix but it has 5k dependencies, so I did not :P

Any Ideas how to fix this? Do you need any further information from me?

Cheers Jonathan

[0] https://build.opensuse.org/project/show/home:jbrielmaier:guix




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Core was generated by `/usr/bin/guile -L . -L . --no-auto-compile -s ./build-aux/compile-all.scm guix/'.
Program terminated with signal SIGABRT, Aborted.
#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
50	  return ret;
[Current thread is 1 (Thread 0x7f3126d79700 (LWP 3968))]
(gdb) bt
#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#1  0x00007f313e9b5549 in __GI_abort () at abort.c:79
#2  0x00007f313e5e95e1 in GC_unmap (start=<optimized out>, bytes=<optimized out>) at extra/../os_dep.c:2576
#3  GC_unmap (start=<optimized out>, bytes=<optimized out>) at extra/../os_dep.c:2535
#4  0x00007f313e5fb3f9 in GC_unmap_old () at extra/../allchblk.c:419
#5  GC_unmap_old () at extra/../allchblk.c:400
#6  GC_finish_collection () at extra/../alloc.c:1115
#7  0x00007f313e5fba05 in GC_try_to_collect_inner (stop_func=0x7f313e5f26a0 <GC_never_stop_func>)
    at extra/../alloc.c:553
#8  GC_try_to_collect_inner (stop_func=stop_func@entry=0x7f313e5f26a0 <GC_never_stop_func>) at extra/../alloc.c:485
#9  0x00007f313e5fe0b6 in GC_grow_table (table=table@entry=0x7f313e64c300 <GC_fnlz_roots>,
    log_size_ptr=log_size_ptr@entry=0x7f313e60a888 <log_fo_table_size>,
    entries_ptr=entries_ptr@entry=0x7f313e64c2f0 <GC_fo_entries>) at extra/../finalize.c:133
#10 0x00007f313e5fe4ba in GC_register_finalizer_inner (obj=0x7f312dba27a0, fn=0x7f313e8ff380 <finalize_bignum>,
    cd=0x0, ofn=0x7f3126d785e0, ocd=0x7f3126d785d8, mp=0x7f313e5f2690 <GC_null_finalize_mark_proc>)
    at extra/../finalize.c:703
#11 0x00007f313e5fea9c in GC_register_finalizer_no_order (obj=<optimized out>, fn=<optimized out>,
    cd=<optimized out>, ofn=<optimized out>, ocd=<optimized out>) at extra/../finalize.c:844
#12 0x00007f313e91a683 in scm_i_set_finalizer (obj=<optimized out>, proc=<optimized out>, data=<optimized out>)
    at finalizers.c:53
#13 0x00007f313e8fd30e in make_bignum () at numbers.c:265
#14 scm_i_mkbig () at numbers.c:275
#15 scm_logior (n1=<optimized out>, n2=0x7f312dba2840) at numbers.c:4439
#16 0x00007f313e8ba25f in vm_regular_engine (thread=0x2, vp=0x7f312b1d0e10, registers=0x0, resume=1050459601)
    at vm-engine.c:2575
#17 0x00007f313e8ab660 in scm_call_n (proc=<optimized out>, argv=<optimized out>, nargs=0) at vm.c:1260
#18 0x00007f313e93874e in scm_call_with_unblocked_asyncs (proc=0x7f3135cd3f20) at async.c:400
#19 0x00007f313e8b637f in vm_regular_engine (thread=0x2, vp=0x7f312b1d0e10, registers=0x0, resume=1050459601)
    at vm-engine.c:786
#20 0x00007f313e8ab660 in scm_call_n (proc=<optimized out>, argv=<optimized out>, nargs=0) at vm.c:1260
#21 0x00007f313e8bee56 in really_launch (d=0x7f3135cad9c0) at threads.c:794
#22 0x00007f313e92c29a in c_body (d=0x7f3126d78e40) at continuations.c:422
--Type <RET> for more, q to quit, c to continue without paging--
#23 0x00007f313e8b637f in vm_regular_engine (thread=0x2, vp=0x7f312b1d0e10, registers=0x0, resume=1050459601)
    at vm-engine.c:786
#24 0x00007f313e8ab660 in scm_call_n (proc=<optimized out>, argv=<optimized out>, nargs=0) at vm.c:1260
#25 0x00007f313e8bbaf3 in catch (tag=<optimized out>, thunk=0x7f3135cc3620, handler=0x7f3135cc3600,
    pre_unwind_handler=0x7f3135cc3400) at throw.c:137
#26 0x00007f313e931745 in scm_i_with_continuation_barrier (body=body@entry=0x7f313e92c290 <c_body>,
    body_data=body_data@entry=0x7f3126d78e40, handler=handler@entry=0x7f313e931650 <c_handler>,
    handler_data=handler_data@entry=0x7f3126d78e40,
    pre_unwind_handler=pre_unwind_handler@entry=0x7f313e931560 <pre_unwind_handler>,
    pre_unwind_handler_data=0x7f313a50da20) at continuations.c:360
#27 0x00007f313e931a55 in scm_c_with_continuation_barrier (func=<optimized out>, data=<optimized out>)
    at continuations.c:456
#28 0x00007f313e8bf156 in with_guile (base=0x7f3126d78ea0, data=0x7f3126d78ed0) at threads.c:661
#29 0x00007f313e5eedc7 in GC_call_with_stack_base (fn=fn@entry=0x7f313e8bf080 <with_guile>,
    arg=arg@entry=0x7f3126d78ed0) at extra/../misc.c:2106
#30 0x00007f313e8bc2dd in scm_i_with_guile (dynamic_state=<optimized out>, data=0x7f3135cad9c0,
    func=0x7f313e8bede0 <really_launch>) at threads.c:704
#31 launch_thread (d=0x7f3135cad9c0) at threads.c:803
#32 0x00007f313e212faa in start_thread (arg=<optimized out>) at pthread_create.c:486
#33 0x00007f313ea8d73f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95