On my system its quite simple to reproduce, start guile, type ,q enter, then start it again and it crashes. In between runs Ive verified it does not show up in the process list, ps aux|grep guile.
~ $ guile
GNU Guile 2.0.11
Copyright (C) 1995-2014 Free Software Foundation, Inc.
Guile comes with ABSOLUTELY NO WARRANTY; for details type `,show w'.
This program is free software, and you are welcome to redistribute it
under certain conditions; type `,show c' for details.
Enter `,help' for help.
scheme@(guile-user)> ,q
~ $ guile
guile: ../nptl/pthread_mutex_lock.c:80: __pthread_mutex_cond_lock: Assertion `mutex->__data.__owner == 0' failed.
Aborted (core dumped)
~ $ guile
GNU Guile 2.0.11
Copyright (C) 1995-2014 Free Software Foundation, Inc.
But doesnt happen every time. Seems like every other or every third time.
Here is a backtrace from gdb
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/libthread_db.so.1".
Core was generated by `guile'.
Program terminated with signal SIGABRT, Aborted.
#0 0x00007feab193b389 in raise () from /usr/lib/libc.so.6
(gdb) bt
#0 0x00007feab193b389 in raise () from /usr/lib/libc.so.6
#1 0x00007feab193c788 in abort () from /usr/lib/libc.so.6
#2 0x00007feab19344a6 in __assert_fail_base () from /usr/lib/libc.so.6
#3 0x00007feab1934552 in __assert_fail () from /usr/lib/libc.so.6
#4 0x00007feab1cbf3a4 in __pthread_mutex_cond_lock () from /usr/lib/libpthread.so.0
#5 0x00007feab1cba0df in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
#6 0x00007feab16b8897 in ?? () from /usr/lib/libgc.so.1
#7 0x00007feab16aecd5 in ?? () from /usr/lib/libgc.so.1
#8 0x00007feab16aee9b in ?? () from /usr/lib/libgc.so.1
#9 0x00007feab16afcbd in ?? () from /usr/lib/libgc.so.1
#10 0x00007feab16a63bd in ?? () from /usr/lib/libgc.so.1
#11 0x00007feab16a6daa in ?? () from /usr/lib/libgc.so.1
#12 0x00007feab16a6fd6 in ?? () from /usr/lib/libgc.so.1
#13 0x00007feab16a709d in GC_gcollect () from /usr/lib/libgc.so.1
#14 0x00007feab1f3c704 in scm_realloc () from /usr/lib/libguile-2.0.so.22
#15 0x00007feab1f334de in scm_c_register_extension () from /usr/lib/libguile-2.0.so.22
#16 0x00007feab1f23d93 in ?? () from /usr/lib/libguile-2.0.so.22
#17 0x00007feab1f4c21f in ?? () from /usr/lib/libguile-2.0.so.22
#18 0x00007feab1f9ff00 in ?? () from /usr/lib/libguile-2.0.so.22
#19 0x00007feab1f9ff39 in ?? () from /usr/lib/libguile-2.0.so.22
#20 0x00007feab16b1d42 in GC_call_with_stack_base () from /usr/lib/libgc.so.1
#21 0x00007feab1fa0328 in scm_with_guile () from /usr/lib/libguile-2.0.so.22
#22 0x00007feab1f4c195 in scm_boot_guile () from /usr/lib/libguile-2.0.so.22
#23 0x0000000000400c54 in ?? ()
#24 0x00007feab1927b05 in __libc_start_main () from /usr/lib/libc.so.6
#25 0x0000000000400cc7 in ?? ()
(gdb)
# uname -a
Linux precizija 3.13.7-1-ARCH #1 SMP PREEMPT Mon Mar 24 20:06:08 CET 2014 x86_64 GNU/Linux
Any other information needed? How can I dig more into why this is happening?
Regards