[MC-252502] XML_ERROR_PARSING_CDATA error when null character appears in chat

When the null Unicode character appears in chat, the game output shows the error

<log4j:Event logger="fin" timestamp="1723129374266" level="INFO" thread="Render thread">
    <log4j:Message><![CDATA[[System] [CHAT] ]]></log4j:Message>
  </log4j:Event>
XML_ERROR_PARSING_CDATA

An example of how you can reproduce this:

Run command

/tellraw @s "\u0000"

The game output now shows the error shown above.

Linked issues

is duplicated by 1

MC-277730 log4j error when the game renders the \u0000 character Resolved

Comments 2

BigClog 2023-11-21T02:07:56Z

Confirmed in 23w46a.

[@: Summoned new <log4j:Event logger="net.minecraft.server.MinecraftServer" timestamp="1700532409097" level="INFO" thread="Server thread"> <log4j:Message><![CDATA[[Not Secure] [ <log4j:Event logger="ewz" timestamp="1700532409148" level="INFO" thread="Render thread"> <log4j:Message><![CDATA[[System] [CHAT] [@: Summoned new <log4j:Event logger="ewz" timestamp="1700532409149" level="INFO" thread="Render thread"> <log4j:Message><![CDATA[[System] [CHAT] [ <log4j:Event logger="gie" timestamp="1700532413116" level="INFO" thread="Server thread">

mattp12 2024-08-08T15:07:14Z

Simplified description and how to reproduce