gdb.log

$ gdb --args /home/dan/Source/perl6/install/bin/moar --libpath=src/vm/moar/stage0 src/vm/moar/stage0/nqp.moarvm --bootstrap --setting=NULL --no-regex-lib --target=mbc --output=gen/moar/stage1/nqpmo.moarvm gen/moar/stage1/nqpmo.nqp
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Reading symbols from /home/dan/Source/perl6/install/bin/moar...done.
(gdb) r
Starting program: /home/dan/Source/perl6/install/bin/moar --libpath=src/vm/moar/stage0 src/vm/moar/stage0/nqp.moarvm --bootstrap --setting=NULL --no-regex-lib --target=mbc --output=gen/moar/stage1/nqpmo.moarvm gen/moar/stage1/nqpmo.nqp
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7ffff62be700 (LWP 6689)]

Thread 1 "moar" received signal SIGSEGV, Segmentation fault.
0x00007ffff761f018 in MVM_frame_find_contextual_by_name (tc=0x555555758c40, name=0x555555c81f80, type=0x7fffffffc456, cur_frame=0x7ffff7fd4068, vivify=1, found_frame=0x7fffffffc458) at src/core/frame.c:1444
1444                MVM_HASH_GET(tc, lexical_names, name, entry)
(gdb) bt
#0  0x00007ffff761f018 in MVM_frame_find_contextual_by_name (tc=0x555555758c40, name=0x555555c81f80, type=0x7fffffffc456, cur_frame=0x7ffff7fd4068, vivify=1, found_frame=0x7fffffffc458) at src/core/frame.c:1444
#1  0x00007ffff761f44f in MVM_frame_getdynlex (tc=0x555555758c40, name=0x555555c81f80, cur_frame=0x7ffff7fd4068) at src/core/frame.c:1481
#2  0x00007ffff54b10d5 in ?? ()
#3  0x0000000000000008 in ?? ()
#4  0x0000555555c95710 in ?? ()
#5  0x00007ffff7fd4030 in ?? ()
#6  0x00007ffff79fafec in ?? () from //home/dan/Source/perl6/install/lib/libmoar.so
#7  0x0000555555758c40 in ?? ()
#8  0xf2057724f2057724 in ?? ()
#9  0x0000555555c49240 in ?? ()
#10 0x00007fffffffc500 in ?? ()
#11 0x00007ffff7619de2 in MVM_p6opaque_read_object (tc=0x5555558b7010, o=0x7fff000086cd, offset=93824994348096) at src/6model/reprs/P6opaque.h:115
#12 0x00007ffff7725fb2 in MVM_jit_enter_code (tc=0x555555758c40, cu=0x5555557cc3f0, code=0x7ffff007e160) at src/jit/compile.c:335
#13 0x00007ffff7613caa in MVM_interp_run (tc=0x555555758c40, initial_invoke=0x7ffff771516f <toplevel_initial_invoke>, invoke_data=0x5555557f7958) at src/core/interp.c:5729
#14 0x00007ffff77152d4 in MVM_vm_run_file (instance=0x555555758260, filename=0x7fffffffe1cf "src/vm/moar/stage0/nqp.moarvm") at src/moar.c:401
#15 0x00005555555554c0 in main (argc=9, argv=0x7fffffffdde8) at src/main.c:256
(gdb)

interp.c

            OP(getdynlex): {
                GET_REG(cur_op, 0).o = MVM_frame_getdynlex(tc, GET_REG(cur_op, 2).s,
                        tc->cur_frame->caller);
                cur_op += 4;
                goto NEXT;
            }

template

(template: getdynlex
  (call (^func &MVM_frame_getdynlex)
    (arglist
      (carg (tc) ptr)
      (carg $1 ptr)
      (carg (^caller) ptr)) ptr_sz))