Trace/BPT trap: 5 

```
 ➜ v8-debug --allow-natives-syntax 

➜  v81 v8-debug --allow-natives-syntax 
V8 version 10.9.124
d8> const arr = [1,2,3]
undefined

➜ d8> %SystemBreak()
/Users/didi/.jsvu/v8-debug: line 2: 38695 Trace/BPT trap: 5       "/Users/didi/.jsvu/engines/v8-debug/v8-debug" --snapshot_blob="/Users/didi/.jsvu/engines/v8-debug/snapshot_blob.bin" "$@"
```