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    <title>Mojang Studios Jira</title>
    <link>https://bugs.mojang.com</link>
    <description>This file is an XML representation of an issue</description>
    <language>en</language>    <build-info>
        <version>9.12.2</version>
        <build-number>9120002</build-number>
        <build-date>10-01-2024</build-date>
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<item>
            <title>[MC-5728] Infinite loop caused by a comparator (on subtractor mode) feedback loop.</title>
                <link>https://bugs.mojang.com/browse/MC-5728</link>
                <project id="10400" key="MC">Minecraft: Java Edition</project>
                    <description>&lt;p&gt;I&apos;ve attached the crash log and a schematic of the circuit.&lt;/p&gt;

&lt;p&gt;The top repeater signifies a comparator on subtractor mode, the second one is a simple comparator.&lt;/p&gt;

&lt;p&gt;I can only assume that some missing safe-guards allowed the subtractor to update itself continuously, until the game crashed.&lt;/p&gt;

&lt;p&gt;NOTE: if you want to reproduce this, you should place the second comparator (acting as a buffer) last, to get the exact same state.&lt;/p&gt;</description>
                <environment></environment>
        <key id="18379">MC-5728</key>
            <summary>Infinite loop caused by a comparator (on subtractor mode) feedback loop.</summary>
                <type id="1" iconUrl="https://bugs.mojang.com/secure/viewavatar?size=xsmall&amp;avatarId=18903&amp;avatarType=issuetype">Bug</type>
                                    <status id="5" iconUrl="https://bugs.mojang.com/images/icons/statuses/resolved.png" description="A resolution has been taken, and it is awaiting verification by reporter. From here issues are either reopened, or are closed.">Resolved</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="1">Fixed</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="eddyb">Eddy B.</reporter>
                        <labels>
                            <label>compartor</label>
                            <label>redstone</label>
                    </labels>
                <created>Thu, 3 Jan 2013 18:00:53 +0100</created>
                <updated>Sun, 10 Feb 2013 02:43:22 +0100</updated>
                            <resolved>Fri, 4 Jan 2013 10:54:17 +0100</resolved>
                                    <version>Snapshot 13w01a</version>
                                    <fixVersion>Snapshot 13w01b</fixVersion>
                                                        <votes>2</votes>
                                    <watches>2</watches>
                                                                            <comments>
                            <comment id="32531" author="blaarg171" created="Fri, 4 Jan 2013 03:24:42 +0100"  >&lt;p&gt;Ive had a very similar setup causing a crash as well. One comparator outputting into a second comparator which outputs directly into the side of the first. 2 comparators, 6 redstone and some sort of initial input into the loop (i.e. lever).&lt;/p&gt;</comment>
                            <comment id="32404" author="isibboi" created="Thu, 3 Jan 2013 23:17:25 +0100"  >&lt;p&gt;I can confirm this bug. It causes a stack overflow. I get the same loop between those for methods.&lt;/p&gt;</comment>
                            <comment id="32246" author="haxel96" created="Thu, 3 Jan 2013 19:45:52 +0100"  >&lt;p&gt;I can confirm this crash. I did it in a different way though. I did it like this&lt;/p&gt;

&lt;p&gt;  x&amp;gt;#&lt;br/&gt;
  x&amp;lt;xxi&lt;/p&gt;

&lt;p&gt;where x = redstone, &amp;lt; = comparator facing the shown direction on the default setting, # = a solid block (capable of transmitting redstone power), i = redstone torch&lt;/p&gt;

&lt;p&gt;Do not try this in a normal world as it will &quot;corrupt&quot; the world, until you delete it using external programs (MCEdit)&lt;/p&gt;</comment>
                            <comment id="32241" author="dinnerbone" created="Thu, 3 Jan 2013 19:37:58 +0100"  >&lt;p&gt;I believe it&apos;s just a bug in the error reporting as java kinda fails at figuring stuff out in such extreme cases. I replicated successfully locally.&lt;/p&gt;</comment>
                            <comment id="32238" author="kumasasa" created="Thu, 3 Jan 2013 19:35:06 +0100"  >&lt;p&gt;If you can reproduce this with an unmodded Minecraft, please go ahead.&lt;/p&gt;

&lt;p&gt;Until then:&lt;br/&gt;
This ticket is invalid as it relates to a modded or 3rd party client/server.&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;Any non-standard client/server build needs to be taken up with the appropriate team, not Mojang.&lt;/li&gt;
	&lt;li&gt;Any plugin issues need to be addressed to the plugin creator.&lt;/li&gt;
	&lt;li&gt;This site is for addressing issues related to the base unmodded MineCraft.&lt;/li&gt;
&lt;/ul&gt;
</comment>
                            <comment id="32237" author="kumasasa" created="Thu, 3 Jan 2013 19:33:42 +0100"  >&lt;p&gt;The drunk bot found out:&lt;/p&gt;
&lt;div class=&quot;code panel&quot; style=&quot;border-width: 1px;&quot;&gt;&lt;div class=&quot;codeContent panelContent&quot;&gt;
&lt;pre class=&quot;code-java&quot;&gt;Is Modded: Very likely; Jar signature invalidated
&lt;/pre&gt;
&lt;/div&gt;&lt;/div&gt;</comment>
                            <comment id="32224" author="eddyb" created="Thu, 3 Jan 2013 19:12:08 +0100"  >&lt;p&gt;Go away bot, you&apos;re drunk.&lt;/p&gt;</comment>
                            <comment id="32185" author="spamgolem" created="Thu, 3 Jan 2013 18:01:21 +0100"  >&lt;p&gt;I could not find any existing issue that contains any of the crashes mentioned here. However, all of the crash reports that you have provided are from a modded version of Minecraft. Please try to reproduce the crash in a vanilla (non-modded) version of Minecraft and attach that report or this may be dismissed as being caused by a mod.&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10102">
                    <name>Duplicate</name>
                                                                <inwardlinks description="is duplicated by">
                                        <issuelink>
            <issuekey id="18461">MC-5809</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="18724">MC-6065</issuekey>
        </issuelink>
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                <attachments>
                            <attachment id="16805" name="2013-01-03_20.25.47.png" size="292216" author="blaarg171" created="Fri, 4 Jan 2013 03:27:51 +0100"/>
                            <attachment id="16738" name="2013-01-03_23.22.51.png" size="320094" author="isibboi" created="Thu, 3 Jan 2013 23:23:24 +0100"/>
                            <attachment id="16570" name="V4oqc.png" size="1300" author="eddyb" created="Thu, 3 Jan 2013 18:00:53 +0100"/>
                            <attachment id="16569" name="crash-2013-01-03_18.48.48-server.txt" size="1547392" author="eddyb" created="Thu, 3 Jan 2013 18:00:53 +0100"/>
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