Thread 15 "ecl" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fffecad8700 (LWP 3645)]
GC_is_marked (p=<optimized out>)
    at /home/polos/ecl/ecl-16.1.3/src/bdwgc/mark.c:218
218	    return (int)mark_bit_from_hdr(hhdr, bit_no); /* 0 or 1 */
(gdb) bt
#0  GC_is_marked (p=<optimized out>) at /home/polos/ecl/ecl-16.1.3/src/bdwgc/mark.c:218
#1  0x00007ffff7947f32 in GC_make_disappearing_links_disappear (dl_hashtbl=0x7ffff7ca1330 <GC_dl_hashtbl>)
    at /home/polos/ecl/ecl-16.1.3/src/bdwgc/finalize.c:711
#2  GC_finalize () at /home/polos/ecl/ecl-16.1.3/src/bdwgc/finalize.c:752
#3  0x00007ffff794547b in GC_finish_collection () at /home/polos/ecl/ecl-16.1.3/src/bdwgc/alloc.c:879
#4  0x00007ffff7945bdd in GC_try_to_collect_inner (stop_func=0x7ffff7944c60 <GC_never_stop_func>)
    at /home/polos/ecl/ecl-16.1.3/src/bdwgc/alloc.c:472
#5  0x00007ffff7946514 in GC_collect_or_expand (needed_blocks=needed_blocks@entry=1, ignore_off_page=ignore_off_page@entry=0, 
    retry=retry@entry=0) at /home/polos/ecl/ecl-16.1.3/src/bdwgc/alloc.c:1270
#6  0x00007ffff7946707 in GC_allocobj (gran=gran@entry=4, kind=1) at /home/polos/ecl/ecl-16.1.3/src/bdwgc/alloc.c:1360
#7  0x00007ffff794998f in GC_generic_malloc_inner (lb=lb@entry=64, k=k@entry=1) at /home/polos/ecl/ecl-16.1.3/src/bdwgc/malloc.c:132
#8  0x00007ffff7949a6e in GC_generic_malloc (lb=64, k=1) at /home/polos/ecl/ecl-16.1.3/src/bdwgc/malloc.c:181
#9  0x00007ffff793f1af in ecl_alloc (n=n@entry=64) at /home/polos/ecl/ecl-16.1.3/src/c/alloc_2.d:719
#10 0x00007ffff7920d6d in alloc_pointerfull_memory (l=l@entry=8) at /home/polos/ecl/ecl-16.1.3/src/c/array.d:527
#11 0x00007ffff7920dfc in ecl_array_allocself (x=x@entry=0x2571570) at /home/polos/ecl/ecl-16.1.3/src/c/array.d:542
#12 0x00007ffff79217b4 in si_make_vector (etype=0x7ffff7c715b8 <cl_symbols+56>, dim=0x23, adj=0x1, fillp=0x1, displ=0x1, disploff=0x3)
    at /home/polos/ecl/ecl-16.1.3/src/c/array.d:518
#13 0x00007ffff7921979 in si_make_pure_array (etype=<optimized out>, dims=dims@entry=0xe3bd91, adj=0x1, fillp=<optimized out>, 
    displ=<optimized out>, disploff=0x3) at /home/polos/ecl/ecl-16.1.3/src/c/array.d:413
#14 0x00007ffff781221e in cl_make_array (narg=narg@entry=5, v1dimensions=0xe3bd91) at lsp/arraylib.c:49
#15 0x00007ffff7846f03 in L4make_format_directive (narg=narg@entry=14) at lsp/format.c:520
#16 0x00007ffff7853460 in L7parse_directive (v1string=v1string@entry=0x3ad35a0, v2start=v2start@entry=0x3) at lsp/format.c:749
#17 0x00007ffff78536fb in L5tokenize_control_string (v1string=v1string@entry=0x3ad35a0) at lsp/format.c:562
#18 0x00007ffff785d0e2 in L8formatter_aux (narg=narg@entry=3, v1stream=v1stream@entry=0x5827f00, 
    v2string_or_fun=v2string_or_fun@entry=0x3ad35a0, v3orig_args=<optimized out>) at lsp/format.c:821
#19 0x00007ffff792d586 in cl_format (narg=narg@entry=3, strm=0x5827f00, strm@entry=0x1, string=0x3ad35a0)
    at /home/polos/ecl/ecl-16.1.3/src/c/format.d:2236
#20 0x00007fffed74ae50 in L25untokenize_completion (narg=2, v1tokens=0x58211d1)
    at .slime/fasl/2.20/ecl-16.1.3-linux-x86_64/contrib/swank-c-p-c.c:2155
#21 0x00007fffed74bf22 in L23longest_compound_prefix (narg=<optimized out>, v1completions=0x57bcea1)
    at .slime/fasl/2.20/ecl-16.1.3-linux-x86_64/contrib/swank-c-p-c.c:1990
#22 0x00007fffed74f7d8 in L1completions (v1string=0x64152c0, v2default_package_name=0x5eba770)
    at .slime/fasl/2.20/ecl-16.1.3-linux-x86_64/contrib/swank-c-p-c.c:65
#23 0x00007ffff78dca27 in ecl_interpret (frame=frame@entry=0x7fffecad62d0, env=<optimized out>, bytecodes=bytecodes@entry=0x393b4b0)
    at /home/polos/ecl/ecl-16.1.3/src/c/interpreter.d:491
#24 0x00007ffff78e1450 in eval_nontrivial_form (form=0x7fffecad63d0, env=0x7ffff7fee000) at /home/polos/ecl/ecl-16.1.3/src/c/compiler.d:2388
#25 eval_form (env=env@entry=0x7ffff7fee000, form=form@entry=0x5764f21) at /home/polos/ecl/ecl-16.1.3/src/c/compiler.d:2402
#26 0x00007ffff78e456d in si_eval_with_env (narg=narg@entry=1, form=0x5764f21) at /home/polos/ecl/ecl-16.1.3/src/c/compiler.d:3150
#27 0x00007ffff78da67f in cl_eval (form=<optimized out>) at /home/polos/ecl/ecl-16.1.3/src/c/eval.d:167
#28 0x00007ffff1244ca8 in L235eval_for_emacs (v1form=<optimized out>, v2buffer_package=<optimized out>, v3id=<optimized out>)
    at .slime/fasl/2.20/ecl-16.1.3-linux-x86_64/swank.c:14598
---Type <return> to continue, or q <return> to quit---
#29 0x00007ffff78da475 in cl_apply (narg=<optimized out>, narg@entry=2, fun=0x399ed40, lastarg=<optimized out>)
    at /home/polos/ecl/ecl-16.1.3/src/c/eval.d:158
#30 0x00007ffff1212ae0 in L103process_requests (v1timeout=0x1) at .slime/fasl/2.20/ecl-16.1.3-linux-x86_64/swank.c:6784
#31 0x00007ffff123e2e8 in LC94__g376 (narg=<optimized out>) at .slime/fasl/2.20/ecl-16.1.3-linux-x86_64/swank.c:6507
#32 0x00007ffff124b993 in LC98__g373 (narg=<optimized out>) at .slime/fasl/2.20/ecl-16.1.3-linux-x86_64/swank.c:6239
#33 0x00007ffff1ed1952 in LC48call_with_debugger_hook (v1hook=0x399e840, v2fun=0x320e7e0)
    at .slime/fasl/2.20/ecl-16.1.3-linux-x86_64/ecl.c:2018
#34 0x00007ffff78da475 in cl_apply (narg=<optimized out>, fun=0x3ab76c0, lastarg=<optimized out>)
    at /home/polos/ecl/ecl-16.1.3/src/c/eval.d:158
#35 0x00007ffff11ee845 in LC101__g407 (narg=<optimized out>) at .slime/fasl/2.20/ecl-16.1.3-linux-x86_64/swank.c:6449
#36 0x00007ffff1223fb6 in L2call_with_bindings (v1alist=0x31a6471, v2fun=0x320e5d0) at .slime/fasl/2.20/ecl-16.1.3-linux-x86_64/swank.c:259
#37 0x00007ffff1246762 in L102handle_requests (narg=<optimized out>, v1connection=<optimized out>)
    at .slime/fasl/2.20/ecl-16.1.3-linux-x86_64/swank.c:6134
#38 0x00007fffedf82b8c in L32repl_loop (v1connection=0x3a3d2d0) at .slime/fasl/2.20/ecl-16.1.3-linux-x86_64/contrib/swank-repl.c:1584
#39 0x00007fffedf85040 in LC29__g71 (narg=0) at .slime/fasl/2.20/ecl-16.1.3-linux-x86_64/contrib/swank-repl.c:1558
#40 0x00007ffff1223e66 in L2call_with_bindings (v1alist=0x1, v2fun=0x320e810) at .slime/fasl/2.20/ecl-16.1.3-linux-x86_64/swank.c:60
#41 0x00007fffedf879d2 in LC30__g70 (narg=<optimized out>) at .slime/fasl/2.20/ecl-16.1.3-linux-x86_64/contrib/swank-repl.c:1532
#42 0x00007ffff78da475 in cl_apply (narg=<optimized out>, narg@entry=2, fun=0x3239b10, lastarg=<optimized out>)
    at /home/polos/ecl/ecl-16.1.3/src/c/eval.d:158
#43 0x00007ffff793af19 in thread_entry_point (arg=0x3aa1700) at /home/polos/ecl/ecl-16.1.3/src/c/threads/process.d:258
#44 0x00007ffff7958561 in GC_inner_start_routine (sb=<error reading variable: value has been optimized out>, 
    arg=<error reading variable: value has been optimized out>) at /home/polos/ecl/ecl-16.1.3/src/bdwgc/pthread_start.c:57
#45 0x00007ffff794f4d2 in GC_call_with_stack_base (fn=<optimized out>, arg=<optimized out>)
    at /home/polos/ecl/ecl-16.1.3/src/bdwgc/misc.c:1860
#46 0x00007ffff6ce96ba in start_thread (arg=0x7fffecad8700) at pthread_create.c:333
#47 0x00007ffff748e3dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
(gdb)