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    <link>https://jira.mongodb.org</link>
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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-48346] Fix lifetime issues for barriers captured by reference</title>
                <link>https://jira.mongodb.org/browse/SERVER-48346</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;We have instances in unit-tests, where we create a barrier, create a lambda that captures the barrier by reference, and then move the lambda to be executed by a separate thread (e.g., &lt;a href=&quot;https://github.com/mongodb/mongo/blob/ac55d9ad9fcf1a7d55e811ad351540f700a5bcc2/src/mongo/executor/thread_pool_task_executor_test.cpp#L79-L90&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;this one&lt;/a&gt;). In some cases, the barrier can go out of scope and freed, while the other thread is yet to finish the execution of the lambda. This incidents could sporadically cause access violation failures in unit-tests.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1357891">SERVER-48346</key>
            <summary>Fix lifetime issues for barriers captured by reference</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="amirsaman.memaripour@mongodb.com">Amirsaman Memaripour</assignee>
                                    <reporter username="amirsaman.memaripour@mongodb.com">Amirsaman Memaripour</reporter>
                        <labels>
                    </labels>
                <created>Thu, 21 May 2020 02:18:57 +0000</created>
                <updated>Sun, 29 Oct 2023 22:07:55 +0000</updated>
                            <resolved>Tue, 2 Jun 2020 13:23:20 +0000</resolved>
                                                    <fixVersion>4.2.8</fixVersion>
                    <fixVersion>4.4.0-rc8</fixVersion>
                    <fixVersion>4.7.0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="3185911" author="xgen-internal-githook" created="Tue, 2 Jun 2020 21:48:15 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Amirsaman Memaripour&apos;, &apos;email&apos;: &apos;amirsaman.memaripour@mongodb.com&apos;, &apos;username&apos;: &apos;samanca&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-48346&quot; title=&quot;Fix lifetime issues for barriers captured by reference&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-48346&quot;&gt;&lt;del&gt;SERVER-48346&lt;/del&gt;&lt;/a&gt; Fix lifetime issues for barriers captured by reference&lt;/p&gt;

&lt;p&gt;Extends the lifetime of barriers that are referenced by background&lt;br/&gt;
threads and their reference could outlive the barrier&apos;s owner.&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 3b7bc03a8f8b964769ff708674163b67ddd1a450)&lt;br/&gt;
Branch: v4.2&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/fe30303411c922fe45d7466dd951b4244d79c5b2&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/fe30303411c922fe45d7466dd951b4244d79c5b2&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3181192" author="xgen-internal-githook" created="Tue, 2 Jun 2020 16:43:37 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Amirsaman Memaripour&apos;, &apos;email&apos;: &apos;amirsaman.memaripour@mongodb.com&apos;, &apos;username&apos;: &apos;samanca&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-48346&quot; title=&quot;Fix lifetime issues for barriers captured by reference&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-48346&quot;&gt;&lt;del&gt;SERVER-48346&lt;/del&gt;&lt;/a&gt; Fix lifetime issues for barriers captured by reference&lt;/p&gt;

&lt;p&gt;Extends the lifetime of barriers that are referenced by background&lt;br/&gt;
threads and their reference could outlive the barrier&apos;s owner.&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 3b7bc03a8f8b964769ff708674163b67ddd1a450)&lt;br/&gt;
Branch: v4.4&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/f841e415fa8fb7b057c1973f6ff8fc0460de1f08&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/f841e415fa8fb7b057c1973f6ff8fc0460de1f08&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3176092" author="xgen-internal-githook" created="Tue, 2 Jun 2020 13:22:52 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Amirsaman Memaripour&apos;, &apos;email&apos;: &apos;amirsaman.memaripour@mongodb.com&apos;, &apos;username&apos;: &apos;samanca&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-48346&quot; title=&quot;Fix lifetime issues for barriers captured by reference&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-48346&quot;&gt;&lt;del&gt;SERVER-48346&lt;/del&gt;&lt;/a&gt; Fix lifetime issues for barriers captured by reference&lt;/p&gt;

&lt;p&gt;Extends the lifetime of barriers that are referenced by background&lt;br/&gt;
threads and their reference could outlive the barrier&apos;s owner.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/3b7bc03a8f8b964769ff708674163b67ddd1a450&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/3b7bc03a8f8b964769ff708674163b67ddd1a450&lt;/a&gt;&lt;/p&gt;</comment>
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