# gdb miniruby
Program received signal SIGSEGV, Segmentation fault.
mark_locations_array (n=<optimized out>, x=0x0, objspace=0x6000000000039db0) at gc.c:3298
3298            gc_mark_maybe(objspace, v);
(gdb) bt
#0  mark_locations_array (n=<optimized out>, x=0x0, objspace=0x6000000000039db0) at gc.c:3298
#1  gc_mark_locations (objspace=0x6000000000039db0, start=<optimized out>, end=<optimized out>) at gc.c:3310
#2  0x4000000000115260 in gc_mark_locations (end=<optimized out>, start=<optimized out>, objspace=0x6000000000039db0) at gc.c:3506
#3  mark_current_machine_context (objspace=0x6000000000039db0, th=0x60000000000395b0) at gc.c:3500
#4  0x4000000000117ff0 in gc_mark_roots (categoryp=0x0, full_mark=0, objspace=0x6000000000039db0) at gc.c:4105
#5  gc_marks_body (objspace=0x6000000000039db0, full_mark=0) at gc.c:4164
#6  0x400000000011a670 in gc_marks (full_mark=<optimized out>, objspace=0x6000000000039db0) at gc.c:4526
#7  garbage_collect_body (objspace=0x6000000000039db0, full_mark=<optimized out>, immediate_sweep=<optimized out>, reason=<optimized out>) at gc.c:5024
#8  0x400000000011bba0 in heap_prepare_freepage (heap=0x6000000000039dc0, objspace=0x6000000000039db0) at gc.c:1219
#9  heap_get_freeobj_from_next_freepage (heap=<optimized out>, objspace=0x6000000000039db0) at gc.c:1237
#10 heap_get_freeobj (heap=0x6000000000039dc0, objspace=0x6000000000039db0) at gc.c:1259
#11 newobj_of (klass=0, flags=40, v1=0, v2=0, v3=0) at gc.c:1303
#12 0x40000000001264b0 in hash_alloc (klass=0) at hash.c:289
#13 0x40000000003c1120 in Init_BareVM () at vm.c:2822
#14 0x40000000000d25c0 in ruby_setup () at eval.c:54
#15 0x40000000000d68a0 in ruby_init () at eval.c:75
#16 0x400000000001d6f0 in main (argc=1, argv=0x60000fffffffb108) at main.c:35