VM_FRAME_MAGIC_DUMMY 1221 cont.c             th->cfp->flag = VM_FRAME_MAGIC_DUMMY | VM_FRAME_FLAG_FINISH;
VM_FRAME_MAGIC_DUMMY 2389 vm.c               vm_push_frame(th, 0 /* dummy iseq */, VM_FRAME_MAGIC_DUMMY | VM_FRAME_FLAG_FINISH /* dummy frame */,
VM_FRAME_MAGIC_DUMMY  700 vm_args.c      	vm_push_frame(th, iseq, VM_FRAME_MAGIC_DUMMY, Qnil /* self */,
VM_FRAME_MAGIC_DUMMY  142 vm_insnhelper.c 	CHECK(VM_FRAME_MAGIC_DUMMY,  TRUE,  FALSE, FALSE);