Description

ArrayIndexOutOfBoundsException is thrown when JSON.parse(new String("\0.")); called

Environment

• OS： Ubuntu 22.04 16Core 32 GB
• JDK： OpenJDK Runtime Environment (build 17.0.13+11-Ubuntu-2ubuntu122.04)
• commit：67871d7a0c36d2493d5594b57a717cce6d1f6787

Steps to reproduce:

1. Use method JSON.parse
2. Input data - string of any legth, which ends with "\0." where "\0" is null-byte (int('\0') = 0)
3. Error happens

public class TestIssue{
    public static void main(String[] args){
        try{
            JSON.parse(new String("\0."));
        } catch (JSONException ignored) {
            System.out.println("Got JSONException");
        }
    }
}

Correct result

Got JSONException

Actual Result

Exception: java.lang.ArrayIndexOutOfBoundsException: Index 2 out of bounds for length 2
	at com.alibaba.fastjson2.JSONReaderUTF8.readNumber0(JSONReaderUTF8.java:5239)
	at com.alibaba.fastjson2.JSONReader.readNumber(JSONReader.java:2239)
	at com.alibaba.fastjson2.reader.ObjectReaderImplObject.readObject(ObjectReaderImplObject.java:290)
	at com.alibaba.fastjson2.JSON.parse(JSON.java:150)

Additional information

In my opition JSONException must be thrown in this case but not unhandled ArrayIndexOutOfBounds exception

Found with Jazzer