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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-60177] Handle empty collection and turn off all accumulators</title>
                <link>https://jira.mongodb.org/browse/SERVER-60177</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;db.runCommand({&lt;br/&gt;
   aggregate: &quot;C&quot;,&lt;br/&gt;
   pipeline: &lt;span class=&quot;error&quot;&gt;&amp;#91;{$unionWith: &amp;quot;nonExistentCollectionAlpha&amp;quot;}&amp;#93;&lt;/span&gt;,    cursor: {}})&lt;/p&gt;

&lt;p&gt;Causes a nullptr dereference in PipelineD.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1881974">SERVER-60177</key>
            <summary>Handle empty collection and turn off all accumulators</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</type>
                                            <priority id="3" iconUrl="https://jira.mongodb.org/images/icons/priorities/major.svg">Major - P3</priority>
                        <status id="6" iconUrl="https://jira.mongodb.org/images/icons/statuses/closed.png" description="The issue is considered finished, the resolution is correct. Issues which are closed can be reopened.">Closed</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="13201">Fixed</resolution>
                                        <assignee username="eric.cox@mongodb.com">Eric Cox</assignee>
                                    <reporter username="eric.cox@mongodb.com">Eric Cox</reporter>
                        <labels>
                    </labels>
                <created>Thu, 23 Sep 2021 15:21:09 +0000</created>
                <updated>Sun, 29 Oct 2023 21:48:16 +0000</updated>
                            <resolved>Fri, 24 Sep 2021 15:19:42 +0000</resolved>
                                    <version>Backlog</version>
                                    <fixVersion>5.1.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="4106264" author="JIRAUSER1259052" created="Wed, 6 Oct 2021 17:20:18 +0000"  >&lt;p&gt;Updating the fixversion since branching activities occurred yesterday. This ticket will be in rc0 when it&#8217;s been triggered. For more active release information, please keep an eye on #server-release. Thank you!&lt;/p&gt;</comment>
                            <comment id="4081258" author="xgen-internal-githook" created="Thu, 23 Sep 2021 17:44:44 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Eric Cox&apos;, &apos;email&apos;: &apos;eric.cox@mongodb.com&apos;, &apos;username&apos;: &apos;ericox&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-60177&quot; title=&quot;Handle empty collection and turn off all accumulators&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-60177&quot;&gt;&lt;del&gt;SERVER-60177&lt;/del&gt;&lt;/a&gt; Handle empty collection in unionWith when pushing down&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/1482ec7b3af3440a06176939f8fc835ba6394fbc&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/1482ec7b3af3440a06176939f8fc835ba6394fbc&lt;/a&gt;&lt;/p&gt;</comment>
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