当有循环引用时, 调用JSONArray.hashCode()堆栈溢出

[juqkai]

#74 的JSON应该就会导致这个问题, 使用JSON.parse(json) 生成对象, 然后遍历里面的对象, 放进MAP中做为KEY, 然后使用map.containsKey()就可以触发

Caused by: java.lang.StackOverflowError
at java.util.HashMap$EntryIterator.<init>(HashMap.java:932)
at java.util.HashMap.newEntryIterator(HashMap.java:946)
at java.util.HashMap$EntrySet.iterator(HashMap.java:1050)
at java.util.AbstractMap.hashCode(AbstractMap.java:492)
at com.alibaba.fastjson.JSONObject.hashCode(JSONObject.java:331)
at java.util.HashMap$Entry.hashCode(HashMap.java:818)
at java.util.AbstractMap.hashCode(AbstractMap.java:494)
at com.alibaba.fastjson.JSONObject.hashCode(JSONObject.java:331)
at java.util.HashMap$Entry.hashCode(HashMap.java:818)
at java.util.AbstractMap.hashCode(AbstractMap.java:494)
at com.alibaba.fastjson.JSONObject.hashCode(JSONObject.java:331)
at java.util.AbstractList.hashCode(AbstractList.java:541)
at com.alibaba.fastjson.JSONArray.hashCode(JSONArray.java:366)
at java.util.HashMap$Entry.hashCode(HashMap.java:818)
at java.util.AbstractMap.hashCode(AbstractMap.java:494)
at com.alibaba.fastjson.JSONObject.hashCode(JSONObject.java:331)
at java.util.HashMap$Entry.hashCode(HashMap.java:818)
at java.util.AbstractMap.hashCode(AbstractMap.java:494)
at com.alibaba.fastjson.JSONObject.hashCode(JSONObject.java:331)
at java.util.AbstractList.hashCode(AbstractList.java:541)
at com.alibaba.fastjson.JSONArray.hashCode(JSONArray.java:366)
at java.util.HashMap$Entry.hashCode(HashMap.java:818)
at java.util.AbstractMap.hashCode(AbstractMap.java:494)
at com.alibaba.fastjson.JSONObject.hashCode(JSONObject.java:331)
at java.util.HashMap$Entry.hashCode(HashMap.java:818)
at java.util.AbstractMap.hashCode(AbstractMap.java:494)
at com.alibaba.fastjson.JSONObject.hashCode(JSONObject.java:331)
at java.util.AbstractList.hashCode(AbstractList.java:541)
at com.alibaba.fastjson.JSONArray.hashCode(JSONArray.java:366)
at java.util.HashMap$Entry.hashCode(HashMap.java:818)
at java.util.AbstractMap.hashCode(AbstractMap.java:494)
at com.alibaba.fastjson.JSONObject.hashCode(JSONObject.java:331)

[wenshao]

这确实是一个bug！

[wenshao]

java.util.ArrayList也有同样的问题，这个不算是bug