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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>[SERVER-15263] Guard setting -D_GLIBCXX_DEBUG behind a flag</title>
                <link>https://jira.mongodb.org/browse/SERVER-15263</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;On GCC 4.8.2 on Ubuntu 14.04, there appears to be a concurrency error in the _GLIBCXX_DEBUG version of std::list&amp;lt;T&amp;gt; that leads to segfaults.  I&apos;ve dug down into it, and thus far failed to make the crashing uses of std::list&amp;lt;T&amp;gt; crash without _GLIBCXX_DEBUG.  Any of the C++ unit tests in src/mongo/db/repl that make serious use of ReplicationExecutor crash within 500 runs on my desktop with _GLIBCXX_DEBUG enabled, but run without issue for tens of thousands of iterations without it enabled.&lt;/p&gt;

&lt;p&gt;So, I propose to guard _GLIBCXX_DEBUG with a SCons flag, --enable-glibcxx-debug, and default it to off.&lt;/p&gt;</description>
                <environment></environment>
        <key id="158305">SERVER-15263</key>
            <summary>Guard setting -D_GLIBCXX_DEBUG behind a flag</summary>
                <type id="2" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14711&amp;avatarType=issuetype">New Feature</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="schwerin@mongodb.com">Andy Schwerin</assignee>
                                    <reporter username="schwerin@mongodb.com">Andy Schwerin</reporter>
                        <labels>
                    </labels>
                <created>Mon, 15 Sep 2014 22:06:44 +0000</created>
                <updated>Thu, 19 May 2022 20:39:28 +0000</updated>
                            <resolved>Tue, 16 Sep 2014 14:26:25 +0000</resolved>
                                                    <fixVersion>2.7.7</fixVersion>
                                    <component>Build</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="719855" author="xgen-internal-githook" created="Tue, 16 Sep 2014 14:14:26 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;andy10gen&apos;, u&apos;name&apos;: u&apos;Andy Schwerin&apos;, u&apos;email&apos;: u&apos;schwerin@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-15263&quot; title=&quot;Guard setting -D_GLIBCXX_DEBUG behind a flag&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-15263&quot;&gt;&lt;del&gt;SERVER-15263&lt;/del&gt;&lt;/a&gt; Guard -D_GLIBCXX_DEBUG behind a SCons flag.&lt;/p&gt;

&lt;p&gt;Per the message in the JIRA ticket, the _GLIBCXX_DEBUG versions of std::list&amp;lt;T&amp;gt;&lt;br/&gt;
type appears to have a concurrency error that leads to segfaults not related to&lt;br/&gt;
the code under test.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/c7b0fc8e6a9147f8c66ec212afe314e8b68f5341&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/c7b0fc8e6a9147f8c66ec212afe314e8b68f5341&lt;/a&gt;&lt;/p&gt;</comment>
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                                            <outwardlinks description="related to">
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            <issuekey id="271781">SERVER-23082</issuekey>
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                                        <issuelink>
            <issuekey id="103532">SERVER-12189</issuekey>
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