SEGV

gistfile1.txt

dogbert@dogbert-VirtualBox ~/repos/rakudo $ ./perl6 t/spec/S17-lowlevel/cas-int.t
1..24
ok 1 - CAS of one integer to another returns seen value
ok 2 - When expected value is seen then new value put in place
ok 3 - CAS returns seen value when it is not the expected one
ok 4 - Value not changed when no match
Segmentation fault (core dumped)
dogbert@dogbert-VirtualBox ~/repos/rakudo $ gdb /home/dogbert/repos/rakudo/install/bin/moar core
GNU gdb (Ubuntu 7.11.1-0ubuntu1~16.5) 7.11.1
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Reading symbols from /home/dogbert/repos/rakudo/install/bin/moar...done.
[New LWP 1824]
[New LWP 1821]
[New LWP 1823]
[New LWP 1825]
[New LWP 1822]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `/home/dogbert/repos/rakudo/nqp/MoarVM/../../install/bin/moar --execname=./perl6'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x00007eff2c275ff8 in MVM_gc_mark_collectable (tc=0x44a2650, worklist=0x7eff180c3bf0, new_addr=0x7eff18068738) at src/gc/collect.c:370
370	        MVM_gc_worklist_add(tc, worklist, &(tc->instance->all_scs[sc_idx]->sc));
[Current thread is 1 (Thread 0x7eff23fff700 (LWP 1824))]
(gdb) bt
#0  0x00007eff2c275ff8 in MVM_gc_mark_collectable (tc=0x44a2650, worklist=0x7eff180c3bf0, new_addr=0x7eff18068738) at src/gc/collect.c:370
#1  0x00007eff2c275eb0 in process_worklist (tc=0x44a2650, worklist=0x7eff180c3bf0, wtp=0x7eff23ffd640, gen=0 '\000') at src/gc/collect.c:344
#2  0x00007eff2c2759da in MVM_gc_collect (tc=0x44a2650, what_to_do=1 '\001', gen=0 '\000') at src/gc/collect.c:157
#3  0x00007eff2c26b2f6 in run_gc (tc=0x44a2650, what_to_do=1 '\001') at src/gc/orchestrate.c:409
#4  0x00007eff2c26bb09 in MVM_gc_enter_from_interrupt (tc=0x44a2650) at src/gc/orchestrate.c:613
#5  0x00007eff2c1fbab1 in MVM_interp_run (tc=0x44a2650, initial_invoke=0x7eff2c24011d <thread_initial_invoke>, invoke_data=0x44a1a60) at src/core/interp.c:291
#6  0x00007eff2c240266 in start_thread (data=0x44a1a60) at src/core/threads.c:87
#7  0x00007eff2b73c6ba in start_thread (arg=0x7eff23fff700) at pthread_create.c:333
#8  0x00007eff2bd6241d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
(gdb) p sc_idx
$1 = 403080872
(gdb) info threads
  Id   Target Id         Frame 
* 1    Thread 0x7eff23fff700 (LWP 1824) 0x00007eff2c275ff8 in MVM_gc_mark_collectable (tc=0x44a2650, worklist=0x7eff180c3bf0, new_addr=0x7eff18068738) at src/gc/collect.c:370
  2    Thread 0x7eff2ccd4700 (LWP 1821) 0x00007eff2b744827 in futex_abstimed_wait_cancelable (private=0, abstime=0x0, expected=0, futex_word=0x445d270) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
  3    Thread 0x7eff28e43700 (LWP 1823) 0x00007eff2c2740e2 in MVM_gc_root_add_frame_registers_to_worklist (tc=0x7baa70, worklist=0x7eff1c0bebb0, frame=0x1731bd0) at src/gc/roots.c:428
  4    Thread 0x7eff237fe700 (LWP 1825) pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
  5    Thread 0x7eff2b328700 (LWP 1822) pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
(gdb)