Another SEGV ?

gistfile1.txt

dogbert@dogbert-VirtualBox:~/repos/rakudo$ gdb install/bin/moar core.moar.1000.f4e1afea0509471c9f4e9e8a321dd81a.1909739.1627896250000000000000
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Reading symbols from install/bin/moar...
[New LWP 1909742]
[New LWP 1909739]
[New LWP 1909740]
[New LWP 1909744]
[New LWP 1909743]
[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=/home/d'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  try_capture_lex_impl (tc=0x560137d77600, arg_info=...) at src/disp/syscall.c:867
867	    if (((MVMCode *)code)->body.sf->body.outer == tc->cur_frame->static_info)
[Current thread is 1 (Thread 0x7f862fe0e700 (LWP 1909742))]
(gdb) bt
#0  try_capture_lex_impl (tc=0x560137d77600, arg_info=...) at src/disp/syscall.c:867
#1  0x00007f86374a2f19 in MVM_disp_program_run (tc=0x560137d77600, dp=0x7f8628136600, record=0x7f86282acbe0, spesh_cid=6349, bytecode_offset=206, dp_index=0) at src/disp/program.c:2829
#2  0x00007f8637496fad in dispatch_monomorphic (tc=0x560137d77600, entry_ptr=0x7f8628135278, seen=0x7f8628132490, id=0x5601369c6f50, callsite=0x7f86379cea00 <obj_callsite>, arg_indices=0x7f8635728252, 
    source=0x5601348d2fc0, sf=0x56013606e4c0, bytecode_offset=206) at src/disp/inline_cache.c:107
#3  0x00007f8637397f5b in MVM_interp_run (tc=0x560137d77600, initial_invoke=0x7f86373bfb9f <thread_initial_invoke>, invoke_data=0x560137daae10, outer_runloop=0x0) at src/core/interp.c:5437
#4  0x00007f86373bfd03 in start_thread (data=0x560137daae10) at src/core/threads.c:92
#5  0x00007f8636df2609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007f863707d293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
(gdb) l
862	/* try-capture-lex */
863	static void try_capture_lex_impl(MVMThreadContext *tc, MVMArgs arg_info) {
864	    MVMArgProcContext arg_ctx;
865	    MVM_args_proc_setup(tc, &arg_ctx, arg_info);
866	    MVMObject *code = MVM_args_get_required_pos_obj(tc, &arg_ctx, 0);
867	    if (((MVMCode *)code)->body.sf->body.outer == tc->cur_frame->static_info)
868	        MVM_frame_capturelex(tc, code);
869	    MVM_args_set_result_obj(tc, tc->instance->VMNull, MVM_RETURN_CURRENT_FRAME);
870	}
871	static MVMDispSysCall try_capture_lex = {
(gdb) info threads
  Id   Target Id                           Frame 
* 1    Thread 0x7f862fe0e700 (LWP 1909742) try_capture_lex_impl (tc=0x560137d77600, arg_info=...) at src/disp/syscall.c:867
  2    Thread 0x7f8636de2440 (LWP 1909739) futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x560137db6c38) at ../sysdeps/nptl/futex-internal.h:183
  3    Thread 0x7f8636d9e700 (LWP 1909740) MVM_spesh_stats_update (tc=0x560134022a60, sl=0x5601376c7e70, sf_updated=0x7f8630000b80, in_newly_seen=0x7f8636d9c290, in_updated=0x7f8636d9c298) at src/spesh/stats.c:600
  4    Thread 0x7f862ee0b700 (LWP 1909744) 0x00007f86373825a5 in MVM_interp_run (tc=0x7f86200f2af0, initial_invoke=0x7f86373bfb9f <thread_initial_invoke>, invoke_data=0x7f86200beec0, outer_runloop=0x0)
    at src/core/interp.c:2835
  5    Thread 0x7f862f60d700 (LWP 1909743) 0x00007f863703b3bf in __GI___clock_nanosleep (clock_id=clock_id@entry=0, flags=flags@entry=0, req=0x7f862f60b3c0, rem=0x7f862f60b3c0)
    at ../sysdeps/unix/sysv/linux/clock_nanosleep.c:78
(gdb) p ((MVMCode *)code)->body
$1 = {sf = 0x0, outer = 0x0, code_object = 0x0, name = 0x0, state_vars = 0x0, is_static = 0, is_compiler_stub = 0}
(gdb)