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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <description>This file is an XML representation of an issue</description>
    <language>en-us</language>    <build-info>
        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[CXX-829] ASAN build should not shut down libmognoc as it creates false positive leaks</title>
                <link>https://jira.mongodb.org/browse/CXX-829</link>
                <project id="11980" key="CXX">C++ Driver</project>
                    <description>&lt;p&gt;&lt;a href=&quot;https://evergreen.mongodb.com/task/mongodb_cpp_driver_dev_ubuntu1410_debug_asan_compile_and_test_472f3673ee507505671a566d696b0fc1f271179a_16_01_22_21_27_46&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://evergreen.mongodb.com/task/mongodb_cpp_driver_dev_ubuntu1410_debug_asan_compile_and_test_472f3673ee507505671a566d696b0fc1f271179a_16_01_22_21_27_46&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;We know these aren&apos;t real, but we aren&apos;t getting enough symbolized stack trace to write a suppression.&lt;/p&gt;</description>
                <environment></environment>
        <key id="260322">CXX-829</key>
            <summary>ASAN build should not shut down libmognoc as it creates false positive leaks</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</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="9">Done</resolution>
                                        <assignee username="andrew.morrow@mongodb.com">Andrew Morrow</assignee>
                                    <reporter username="andrew.morrow@mongodb.com">Andrew Morrow</reporter>
                        <labels>
                    </labels>
                <created>Fri, 22 Jan 2016 21:53:17 +0000</created>
                <updated>Mon, 19 Sep 2016 20:24:18 +0000</updated>
                            <resolved>Mon, 12 Sep 2016 17:23:49 +0000</resolved>
                                                    <fixVersion>3.0.2</fixVersion>
                                    <component>Build</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="1382209" author="xgen-internal-githook" created="Mon, 12 Sep 2016 17:23:31 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;acmorrow&apos;, u&apos;name&apos;: u&apos;Andrew Morrow&apos;, u&apos;email&apos;: u&apos;acm@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/CXX-829&quot; title=&quot;ASAN build should not shut down libmognoc as it creates false positive leaks&quot; class=&quot;issue-link&quot; data-issue-key=&quot;CXX-829&quot;&gt;&lt;del&gt;CXX-829&lt;/del&gt;&lt;/a&gt; Avoid mongoc cleanup for ASAN build&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo-cxx-driver/commit/252689a7df298957fc74c9698d3e3fed8e037fa9&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-cxx-driver/commit/252689a7df298957fc74c9698d3e3fed8e037fa9&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1382200" author="acm" created="Mon, 12 Sep 2016 17:15:19 +0000"  >&lt;p&gt;The leaks we were observing go away if no call is made to mongoc_cleanup. The theory is that mongoc_cleanup is calling a cleanup function for one of its dependent libraries (maybe SASL?), which then dlcloses some library. There were heap allocations in that library that were stored in static pointers. As long as the libraries were loaded, the leak detector would see those allocations as rooted somewhere, but after the library was unloaded, they were no longer rooted, so they looked like leaks. However, since the library was no longer loaded, ASAN couldn&apos;t give a helpful stack trace and tell us what library it was in. Suppressing the call to mongoc_cleanup seems to make the issue go away.&lt;/p&gt;</comment>
                            <comment id="1381184" author="acm" created="Sat, 10 Sep 2016 20:33:19 +0000"  >&lt;p&gt;&lt;a href=&quot;https://github.com/mongodb/mongo-cxx-driver/pull/527&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-cxx-driver/pull/527&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1178767" author="acm" created="Fri, 19 Feb 2016 13:40:48 +0000"  >&lt;p&gt;Not required for 3.0.1, kicking out to 3.0.2&lt;/p&gt;</comment>
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